Incidentally, two things are worth noting here IMO:
1. It’s great to send a heads-up before actually stepping down, with a list of projects up for grabs—as opposed to simply disappearing as is all too common. That’s a much appreciated sign of commitment and humanity.
2. It’s OK to retire or take a break in free software, we all do eventually; no volunteer should work 365 days a year until they experience burnout.