Hello, Glad you are feeling good about your AS. There can be changes happening in your body which you can not feel and they can come back with a vengeance. I had this remission period too, although that was before I was diagnosed. Can you do both (medication and yoga/etc.?) chiropractor is not generally advised because there is a chance it may break your calcification and which will be extremely painful once that happens, and may be even worse than you can imagine. I think it will not harm if you take your time to decide about your medications. But I think you should immediately stop going to Chiropractor. There was a seminar by Angelo Papachristos MBA BScPT HD where he said so, to avoid chiropractic adjustments. I am at work right now so cannot go through it and let you know where exactly he said that. https://www.youtube.com/watch?v=TWSHUmMhluU
Also please read thishttps://www.spondylitis.org/Learn-About-Spondylitis/Alternative-Treatments
Some people with spondylitis swear by regular chiropractic sessions, but doctors do not recommend this treatment for ankylosing spondylitis.
"Anyone with limited spinal mobility due to [ankylosing spondylitis] should avoid manipulation of their back or neck by chiropractors and masseurs because it can be dangerous," claims Dr. Muhammad Asim Khan, rheumatologist, and AS patient. Dr. Khan explains that chiropractic treatments have sometimes inadvertently led to spinal fractures and neurological complications, especially in individuals with fusion (extra bone growth) due to spondylitis.
— "Ankylosing Spondylitis: The Facts (Oxford Medical Publications)" by Dr. Muhammad Asim Khan, member of the Spondylitis Association of America Medical and Scientific Advisory Board.
I was diagnosed by a chiropractor and I almost fell for getting treatment from him, but he made me worse on day 1. And then I went to rheumy. I am thankful he did not make me feel good, else it would have ended bad for me, since I have clear fusion in my spine and SI joints.
All the best!!