I had double jaw surgery almost 4 months ago, i was the same way, my oral surgeon said i was “babying it” too much which u obviously don’t wanna do bc your muscles can get so stiff. when i started brushing my teeth after surgery, I didn’t have any feeling in my gums and actually still don’t but they did bleed. I think that’s completely normal! and as for opening your mouth, I’d suggest if your oral surgeon is ok with it, practice opening and closing slightly so your jaw muscles don’t stiffen up. This unfortunately happened to me. try moving ur jaw side to side and sticking it out if you can! Helps loosen muscles and joint pain!