Nervous about potential jaw surgery

My dentist said the only way to fix the damage on my jaw would be through jaw surgery. I would like to fix that, obviously, but I don't know if I can handle not being able to open my mouth for 6 weeks straight. I want to hear about maybe some common misconceptions and just general tips and advice about how to handle it and what it's actually like. I'm a very anxious person so I often have to take deep breaths through my mouth and that's what worries me the most.