I retired early at 56 because of the time required to help my elderly parents. Now I work part time per diem (anywhere between twice a month and three times a week, depending on their needs and my availability.) I've been doing that for 5 years now. I'm contemplating retiring fully at 62 now that DH has also retired early, but waiting to see how all the numbers work out since he retired so recently.
I would totally recommend some kind of per diem work. DH keeps talking about finding something "part time" and I keep telling him please no! If you have to work a regular schedule you might as well still work. Try to find something "substitute" or "per diem" where you can choose to work or not. That way you can take extended time when needed or wanted. He prefers a schedule and keeps thinking working one or two regularly scheduled days a week would be great, but we'd never get to go out of town! DH is younger than me and also retired at 56, so he is definitely interested in doing something. (He just doesn't want my advice! He loves pressure washing so I keep suggesting starting a side gig where he can say yes or no to jobs., but he's not biting.)