I wouldn't wait long. I don't know a lot about the status of MS, but from what I've read on IG, it doesn't sound promising. I would worry about waiting around for it, and wasting precious months or years of your fertility.
We often see that the ladies who are closer to or beyond 40 can struggle with the number of eggs retrieved, or the quality. Since you will only be able to cycle once, I would want to take advantage of your still relatively young age. Good luck with deciding and cycling!!