Greetings John and welcome to Dhammawheel.
I am sorry for the situation that you find yourself in.
Certainly do what you can to assist your family, but whatever you do, be sure to look after yourself. That means, but no means limited to, Dhamma practice. I hope that during this turbulent time it will be your rock and anchor.
Don't be afraid to ask your extended family for assistance. I also recommend that you research (if you haven't already done so) for support groups, networks, and whether there is some available institutional care and government subsidy.
Wishing you all the best,
“No lists of things to be done. The day providential to itself. The hour. There is no later. This is later. All things of grace and beauty such that one holds them to one's heart have a common provenance in pain. Their birth in grief and ashes.”
- Cormac McCarthy, The Road
Learn this from the waters:
in mountain clefts and chasms,
loud gush the streamlets,
but great rivers flow silently.
- Sutta Nipata 3.725Compassionate Hands Foundation
(Buddhist aid in Myanmar) • Buddhist Global Relief