Hey Filly! As a survivor of some wickedly heavy duty orthodontia, I can most assuredly tell you that this pain is temporary. Take some ibuprofen/Tylenol and wait it out. It will go away!! Every time they move to a heavier gauge wire, expect this time of transition and be ready with pre-made/already purchased stuff. The first couple of times are the worst - after that, the ouchies go away quicker.
Ideas - soup. I just blend it for my two oldest who are themselves in the middle of it, whatever kind it is. I have even taken pork chops (sauteed in lard as usual and then diced) and mashed potatoes, added bone broth, and whizzed it up for them. Sounds weird, but I am used to puréed diets as my mom works in the kitchen of a nursing home, and they gotta do what they gotta do for those folks, you know. The kid got full, btw.
If you do dairy - yogurt, cottage cheese, kefir, cheese omelet, mozzarella
Try fish filet, something white-fleshed. Should be smashable with your tongue. If not, stick it in your blender with coconut milk and a good chicken broth paste, and perhaps Thai chile paste if heat is your thing.
But yeah, your blender is your friend for the nonce. Just put more interesting stuff in there! ANYTHING can be made into a cream-style soup.
I have a mantra that I have spouted for years... "If I eat right, I feel right. If I feel right, I exercise right. If I exercise right, I think right. If I think right, I eat right..." Phil-SC