Emma, I believe Brenda has some real good advise here. My husband has other issues too, but we just make it the best we can for them. Enjoy your time with him that is all you can do. Just remind him that you love him and what he means to you!
My mother died of CHF in 2000. But the cause of this congestion was from a Tri-massive Myocardial Infarction she had in 1972. So she lived a long time with CHF. So he may bounce back from this, you know? Just continue to love & care for him as you have always done and let the rest take care of itself.
Hoping he gets well soon & praying for you both, Emma.
lmunchkin