RNewson, respect for having such a fine tuned plan.
Agree with the other posters here and the linked thread had great advice too.
We are early in our FIRE plan, but once we hit our number we don't plan to stop cold turkey. I would like to ease back to 4 days a week, then 3, then 2, and eventually stop. This will probably take a few years of weaning down from the 60hr weeks that are my norm. I have similar concerns, and think that as more time becomes available, more hobbies and interests will creep in to fill that time. Like quitting smoking or alcohol, the cold turkey approach works for some, and steady reductions for others.
I love my job though, and it allows such a draw down of involvement quite easily.
Is it possible to cut back to a half time job for a year whilst you learn how to retire early?
Murdoch