If you reach out now to H&W they will say to give it time (8-12months). I guess it depends what your goal of reaching out to them is:
Refund? Not going to happen until a full year at the very least.
Explanation? You may be lucky enough to get one from Dr. Hasson, but what will that do for you specifically? Peace of mind? Validation?
Your best bet is to reach out to some other doctors or even H&W, and get on their books 12 months from now (putting you at about 14months post op), and if the results from H&W are good/acceptable, and you over-reacted, then you can cancel with them, depending on the deposit situation. Although I will say you will have to really bring the proof and have an extended conversation with the other doctors. This isn't as straight forward as you may think.
Good luck