I'm not sure what further advice you're looking for here. Your situation is really challenging however no one can force your husband to work. Certainly the Canadian government will not.No, we don't have anyone who can help.
We don't have any relatives here in Canada. I will be 70 years when my son is 30 years. So if I die at 70, I didn't want my son to live like an orphan. I am glad he has a sibling who he can count on, when he is in trouble. for example, if he is in a situation like the one that I am in right now (I sincerely pray that he will not have to face things like this. But life can be pretty difficult sometimes).
I immigrated to Canada under federal skilled worker category about 10 years ago. I did not know anyone in Canada, when I landed here. Within the first 24 hours after landing, I started my initial paperwork like SIN number, bank accounts, IDs, healthcard, library account etc. Immediately after the initial formalities, I printed out 25 resumes from the public library and distributed my resumes in the nearby shopping mall on DAY 7. I got only one call from the 25 resumes. That was an interview call. I started working my first job on DAY 10 after landing and I initially got 20 hours per week. While keeping that job, I continued looking for additional jobs, and I got a second job with another 20 hours in the second month after landing. I then understood that the money from 40 hours of work was not enough for savings ( I was doing minimum wage jobs). So while keeping the two jobs, I looked for a third job to work at nights and I found one in the third month. I worked three part-time jobs for a total of about 65 hours per week during my first year. (At one point, I took a fourth job, but could not continue after two weeks since I could not reach the employer on time, because of the schedule requirements of the other three jobs that I was already having. So I gave up the 4th job, after two weeks of trial) Because I was juggling three jobs at the same time, and I was taking all the hours that my employers would give me, sometimes I worked 36 hours at a stretch without sleep, and was travelling by bus from one job to another without going home. I had a toothpaste and brush in my bag at that time, since I won't have time to go home during those 36 hours. I bought an old-car 2.5 months after landing. I bought my condo after two years from my landing date (of course, on mortgage). This is how immigrants start their life. I don't understand/believe/ I cannot imagine what my husband is doing, compared to what I was doing 10 years ago.
Working from home or taking kids to work, doesn't solve the big issue at my home. We need additional money. Please read my other comments explaining our financial situation.
You are financially responsible for your husband for another year and a half since your sponsored him. There is no way for you to get out of this obligation. Specifically this means that if your husband takes any social assistance, you will need to pay it back.
The rest of your questions and issues are family law issues and not immigration issues. Please look into speaking with an attorney or at a minimum find an online forum dealing with family law issues.