I'm 62, recently ( back in May) came back to piano after being away for a long time. I was at level 8+, had performed in the community, had 10 years of private lessons and 5 years of music school accordion lessons prior to that. Medications took off the edge for me and I stopped playing but alas I have returned. I'm working my way back to nearly level 7 at this point. I still take those meds and several more, so I kick myself in the butt for having left in the first place ( I'm on a cocktail of crap you guys give out to patients LOL !).
You can do it, you just need the desire and a decent piano. You may or may not need a teacher. I'm doing it without a teacher, in fact have a couple of students myself. It's slowly all coming back to me and I am pleased. I just took the path of I will do what I can, and I'm kind of surprising myself. The first couple of months were tough, determined to not throw in the towel had to start out with very low level work and 10 to 20 minute intervals of practice. Now I can do several pieces, have a planned performance in my house on Christmas Eve for 25 guests. Nothing big but four and five page arrangements, some hymns and carols etc., of about level 5 and 6 work. I've started on some level 7 work, a little Chopin and a couple of Shubert pieces but very slowly, as I don't want to derail my little performance. Once that's done I'll put that work away and go on to these with more vigor.
You're a spring chicken sort to speak, we have a fellow here at 89 starting up piano ! Seriously, it's very feasable for you to relearn at least a good portion of what you left behind. Take your time, put in your work, I hope it goes well for you !