A.P.
Keep trying what you're already doing and also try frozen waffles, frozen fruit, smoothies, soup, pasta, cheese, bread, milkshakes, scrambled eggs, peanut butter, jelly, mashed potatoes, rice, etc. Stuff that doesn't require much chewing. Alternate ibuprofin/acetametaphin. My kids don't eat much when their teething, either. It will pass.