MsJinks
My Mum had heart failure - you can still go on forever - well not quite, but it’s not as imminently fatal as it sounds. Quite common to need de-fluid ing so not sure his pop intake will help.
I've had heart failure for at least four years, and my heart function is now down below 25%, so I'm very glad to hear that!
Funnily enough I seem not to have any fluid retention to speak of, and they are more concerned that I should drink plenty of water for the sake of my kidneys than that I cut down on fluid intake.