Hi Nisha,
- Applying for visitor visa prior to your spousal application is indeed the best sought way.
- But in today's context, be aware that Canada is not issuing any new visitor visa due to Covid.
- Hence, enquire about it and if they are, then go ahead and apply one prior to your application being submitted for spousal.
- You can also apply once you submit your spousal application and get you application number, with valid letter of explanations. However, the approval strictly depends on visa officer attending your case.