Degrading health usually less about suddenly being sick and more about the small okays we give ourself that accumulate into us noticing something is different. By that time, theres been a lot of unnoticed damage.
Doubtful you haven't heard this already, but stepping outside my comfort because i care. Not for guilt or to make you feel bad.
Enact the changes you need. You have people depending on you being around for a while. Around and healthy.
Of course its not easy. Those small okays and forgiveness you give yourself? Instead climb a step each day, strive to climb multiple.