I agree with the response that you'll have the best possible chance working with a lawyer, but I also understand the consultant's pessimism here. There are a handful of things about the timeline which seem to make for less than the strongest possible case for H&C, though of course there may be a way to overcome each one of these.
So the medical issues with your mother started in 2016, but you became a PR in 2021? Why did you start the PR process so late instead of starting earlier back in 2016? (Potential response: You did, and have some documents that you collected in late 2015 or so, before your mom's stroke interrupted the process before you could formally launch the application with IRCC.)
Why did you not wait for a resolution on your mom's part before starting the PR process? (Potential response: You feared aging out and so wanted to apply before it was too late, and you had tried to apply during a period where things seemed to have settled down and additional help was available.)
Why this arrangement? Was your wife caring for your mother during your PR application process? Why not have you come to Canada and earn a living here and sending money back to your wife and mother? (Potential response: The wife was indeed caring for the mother during the PR application process and the original plan was for you to immigrate as a PR to Canada and stay while your wife cared for your mother back home, until the mother either recovered or the unfortunate thing happened. After this, you would sponsor your wife for PR to come join you in Canada.)
Who took care of your mother while you were in Germany? Why couldn't this person take care of your mother the entire time, allowing you to live in India? Were you the only person available to take care of your mother? (Potential response: With your wife in Germany, you were the only person available to take care of your mother the entire time. When you visited Germany, you placed your mother into an institutional care centre, but the expense of this was such that you could only afford it for short period of times, not the multi-year long duration required to maintain PR in Canada.)
(Alternate potential response: You took care of a neighbour's relative at the same time you watched over your mother. When you visited Germany, you were lucky as that neighbour was able to look over their relative and your mother when you were gone, but this neighbour simply was not available to watch over anyone on a full-time or permanent basis.)
What happened in 2023 that you were able to leave your mother behind for six months? Who cared for her in your absence, and why couldn't that person look over your mother for the remaining years? (Potential response: Your wife got a few months of leave from her role in Germany during this time, allowing her to return and watch over your mother while you came to Canada.)
(Alternative potential response: You got the job offer in Canada, and the combination of funds from your Canadian contract and your wife's German job allowed you to hire a professional caretaker for your mother during the duration of your Canadian stay. But since you lost your Canadian contract, you held on as long as you could have, but had to return to take care of your mother personally when the funds for the professional caretaker ran out.)
This might be the hardest one. A lot of single women are able to get through a pregnancy without any family support. I completely understand that it may be against your culture (and rightfully so), but - culture does not make for an H&C. You will be asked why you specifically had to go support your wife, why no one else was available, and why she could not come with you to Canada during this time instead of vice versa (you going to Germany to be with her). (Potential response: your wife knew no one in Germany who was willing to help her despite her years in Germany - Europe is sort of famous for being more aloof socially and being harder to make friends than say, in North America - and your mother's situation caused your savings were depleted, meaning that it was not possible to walk away from your wife's income and benefits at that time.)
1 - Again would defer to the consultant you have already seen, the lawyer you will see, and what the other forum member already posted.
2 - Not sure this is advisable - typically you prepare the documents but only show when asked. Would double check this point with the lawyer.
3 - See the answer to 5.
4 - Agree with the other poster, traveling before expiry is best. Otherwise, you'd have to apply for a PRTD from abroad where the odds go against you significantly more. Worst case scenario, would it be an option to start over from scratch with PR and immigrate afresh as an economic migrant again?
5 - Success stories of a similar nature have been reported on this forum before, see for example
https://www.canadavisa.com/canada-i...-for-senior-h-c-reasons.828318/#post-11008796 - but H&C is so variable that it can sometimes be hard to draw conclusions from others' cases.
Edit: Final thing I'd add - if you manage to find and work with an experienced lawyer who is experienced with H&C PR cases, go with that lawyer's advice, even if it seems to contradict something I wrote here. I'm just an intelligent layman, but that's nothing compared to someone who's taken on and won against IRCC before.