How to make my mouth normal to open wide

I am not able to open my mouth wider after the upper right wisdom tooth extraction since July. I extracted this tooth because I had lower jaw and neck pain. Dentist told me to extract it. Save symptoms after extraction too. Went to tmj specialist and he said it's muscular issue and jaw joint issue.  I was not able to open wider and thought it's related to my muscle tightness and tmj issue. I was using heat and it was improving a little. I have to stretch the upper wisdom tooth removal area to open my mouth wider. I could feel the tightness there. I had some bone fragment shaving procedure on the gum of wisdom tooth extraction area on Monday.Since Monday it gets back to the same. I couldn't open my mouth wider now. I am able to open only a little. Is this normal? Can I try opening wider often or should I wait for that area to heal and works on it's own? I couldn't open more than 2 fingers now. Is it normal to feel this after extraction and after this bone fragment shaving procedure?