I was in remission from severe bipolar symptoms for about six years in my early twenties, no meds, no therapy. Unfortunately it did return for me but through finding the right meds I’ve heen able to have longer periods of stability. The longest I’ve ever achieved so far is a year and a half. Right now I’m coming up on nine months mostly stable, minus a short depression episode that I just got through. So it is definitely possible. I would just enjoy it while you can! Don’t worry about symptoms returning, if they do you know how to get into treatment again.