Want to suck dick

Queen 👸🏽
Being able to give head seems like such a nice skill to have and I want to do it. Only problem i have jaw issues and my jaw opens 1.5 in on a very good day. I'm scared my teeth are gonna scratch him, my jaw is gonna lock and I won't be able to use my jaw the next day. Does anyone else have jaw issues and they have figured out how to make it work? I have gone to the doctor before and I have this brace thing to wear at night but it doesn't really help.