I've been there - so I'd like to share the following in the hope that you too may benefit today, or tomorrow from this advice....
“And that man can have nothing but what he does (good or bad)”
And Allaah knows best. Al-Muntaqa, 2/161
What are the deeds that will benefit one’s parents, whether they are alive or dead?
He replied: These deeds are: honouring them when they are alive, treating them kindly in word and deed, taking care of their needs for maintenance, accommodation and other things, feeling happy to be with them, speaking nicely to them and serving them, because Allaah says (interpretation of the meaning):
“And your Lord has decreed that you worship none but Him. And that you be dutiful to your parents”
especially when they grow old.