I Have Had Severe Trismus Since 08-09-18, I Am Attempting

I have had severe Trismus since 08-09-18, I am attempting to use the sticks in my mouth and stretching exercises throughout the day, I also have regular adjustments by my chiropractor and use moist heat every night.
The oral surgeon stated that I may have to have it forced open which could cause further complications, is there anything else I should be doing or any type of medication I can use to allow that tendon or muscle to release? I have not been able to eat anything but through a straw for several weeks now.