Dear BrynEdGrl (wish we knew your real name!)
Oh dear, you are between a rock and a hard place, aren't you? You finally saw your OS and he gave you rubbish advice!
I think you need some advice from Josephine again:
Josephine
Did you read the article that Pumpkin posted the link to? There is no such thing as a magic window of opportunity, within which time you have to get ROM (or have a MUA) or else all is lost! That is just so much BS. There is absolutely no rush to get improved ROM.
A few (very few!) people do get adhesions and MUA does help them, but your poor ROM is still far more likely to be due to swelling and overuse. And of course your 60 degree ROM would not have been helped by your fall on the stairs, which will have caused even more swelling.
Personally since your OS has been so unhelpful, his team had failed dismally in support of you so far, and he has ideas I don't agree with, I wouldn't let him near me with a 40-foot bargepole!
But that's just a personal reaction and I think you need some more reasoned advice. He's the only OS you've got just now so, before you decide what to do, I think you need to know the answer to two questions:
1. If I have a MUA and I do not have adhesions, will the MUA retard my progress? (Of course, the MUA will cause further swelling, which will give you a temporary set-back, but is it likely to cause any other, more permanent damage?)
2. If I do have adhesions, what damage (if any) will be caused by postponing the MUA? (Do the adhesions keep multiplying rapidly, or is their severity likely to be static?)
Since your OS believes in the critical window of opportunity, of course he will tell you that there is no time to be lost, and you should have the MUA immediately.

Hugs to you!
Caryl