Ah I’ve also been there and done that, albeit from a distance as my parents live abroad.
I honestly don’t have any real tips as I think the way I cope is mostly down to my personality type.
What I would say is: don’t feel like you have to apologise for it supposedly not being “the worst thing imaginable”. It’s pretty awful and all the unknowns are just so hard. We were very grateful that my parent didn’t suffer and it didn’t drag on for “too long”. At the end there was simply no quality of life.
Having an 8-month-old really adds another dimension. You’re already pretty stressed I should imagine!
All the platitudes do turn out to be true. You can only do what you can do. You can’t be in two places at once. You have to fit your own oxygen mask first, etc etc etc.
For me the last few years have been a time of accepting change, and it is REALLY hard. Change is hard. And there’s also an aspect of grief.
I do find comfort in the fact that we have a warm cosy house, enough to eat, and no bombs falling on us - while some people have all my problems PLUS those on top - but you will need to find what works for you. Me saying “count your blessings” is only going to make you feel more guilty, which is the last thing you need.
Lately with my medical tests and my children struggling with serious mental health problems my mantra has been “One day at a time”, or even “half an hour at a time” when necessary. People ask me if I’ll be operated on before Christmas and I just look at them blankly. “No clue. I don’t even know what’s for lunch!”
Take it as it comes.