A note of curiosity: there is little or nothing in your queries which indicates an urgent matter.
So the assertion an urgent reply is needed suggests there might be (not necessarily is but maybe) some other issue or matter at stake. As such, I will offer some observations in response to your queries, but perhaps at the risk of overlooking something of import, since I am not offering anything which could help in making any urgent decisions.
These observations are based on CURRENT law, rules, policy, and practices. These are always subject to change. Policy and practice can change very quickly so long as the changes are consistent with the governing law. But the laws themselves can also change. For example, you are not going to be eligible for citizenship until well into 2023, at the soonest. While there is no indication Parliament is leaning toward changing the law regarding grant citizenship, the laws, rules, policies, and practices in effect in 2023 will govern your eligibility for citizenship and those could be different.
[Re Postponing return to Canada until June or July]
1) If so, that will mean that I will be outside Canada for almost 6 to 7 months and given that my PR card expires in Nov 2024 is there any issue with regards to any of the obligations be it the PR or the citizenship??.
Regarding PR status:
A new PR's obligations are very simple. Do not engage in criminal activity, which includes, in particular, obeying Canadian law, and comply with the PR Residency Obligation. That's it.
The PR Residency Obligation requires the new PR to spend at least 730 days in Canada within the five year time period that begins the date of landing. Basically this means a PR can spend up to 1095 days outside Canada before the fifth year anniversary of the date of landing.
Cutting it close has risks, and "plans" to return to Canada often get delayed (you have now been there, done that). And if a PR waits almost three years to come to stay in Canada, that will put a hard limit on traveling abroad again for the next two years, which in turn can have an impact on the PR's ability to respond to family emergencies or limit employment options.
But as long as the new PR gets to Canada to stay in time to avoid being outside Canada for 1095 days during those first five years, that complies with the PR Residency Obligation.
Regarding citizenship:
In regards to staying abroad, the only direct impact doing so has on eligibility for citizenship is it delays when the new PR will meet the actual physical presence requirement. This is just about calculating days IN Canada and reaching the minimum threshold for meeting the presence requirement (and then best to wait to add a month or more buffer), to determine when to apply for citizenship.
There are of course many other eligibility requirements for citizenship and all those need to be met. Just one example is compliance with Canadian tax filing obligations . . . regarding which, for tax years (corresponding to calendar years) the PR was NOT a resident of Canada and had no Canadian source income, generally (there are nuances and the individual needs to carefully review the CRA information about who needs to file a Canadian return) means the PR is not required to file for that year. So that can count as one of the years in compliance. This is just one example among many regarding how being abroad can indirectly affect the citizenship application.
One additional example: If the new PR remains abroad in a particular country for six months or more after landing, that will require the PR to submit, with the citizenship application, a police clearance for that country.
2) Also when filling in the reason do I need to mention all the detai, i mean does it affect the application by any means? Do they find reasons more important that other reasons?
Not sure what you are referring to. Reason for what? In what application?
If you are referring to the reason box in the actual physical presence calculation, where an applicant explains the reason for traveling abroad, the "reason" asked for is very general. The only detail required is a list of additional countries visited during that particular period of time abroad. That is, the applicant lists the primary destination country in the column for that. And then adds, in the reason box, a list of other countries the PR was in during that time abroad (just a list of the names of the countries).
IRCC's request for a "reason," for the trip abroad, is NOT about justifying the trip. It is simply contextual information, so IRCC can evaluate the travel history information itself in conjunction with and in comparison to other information, like the PR's work and address history. That is, the substance of the reason is essentially NOT important. IRCC wants a relatively full picture of the PR's life during the eligibility period, and this is just part of filling in the spaces between dated events (like dates of exit and dates of entry).
For short periods abroad, the reason is often simply "holidays," or "business trip." For many, for longer periods abroad, "working abroad" might suffice, or "staying with family." Whatever is the truth, of course. The soft landing PR can simply state "needed time to wrap up affairs in home country before settling in Canada," or "needed to settle business matters, " or "to keep employment for financial reasons," or . . . again, whatever is the TRUE reason stated simply. And just the primary reason is enough. No need to explain separate reasons for individual months for example. MAIN THING, as always, is to be forthright and honest.
3) Finally, Do I need to be having an ongoing canadian residence when outisde?, I moved into an apartment in that month but had to end my lease as I knew that it would take time for me to resolve my family matters.
Here too I am not sure what you are referring to. Need for what?
Canada no longer has residency requirements, as such, for either keeping PR status or eligibility for citizenship. Both are now physical presence requirements. The citizenship eligibility requirement has been explicitly a
presence requirement, not a
residency requirement, since June 2015. PRs have a "Residency" Obligation, but for two decades now this has been defined by actual presence, and has no actual "residency" elements.
Apart from that, however, of course residency elements can be significant factors in evaluating claims and evidence as to physical presence. But owning or leasing a residence in Canada does not help much, if at all, if the PR is actually living elsewhere. And even if the PR maintains a place of residence in Canada, if the PR was actually living elsewhere it would be misleading and potentially outright misrepresentation to list the Canadian address as the PR's residential address in the address history in either the citizenship application or a PR card renewal application.