Peaches had 6 out of 8 teeth removed a while back. I initially only feed soft food (no chunks) with some water and made it soupy.
She gradually moved up to kibble with water (let sit) and then added chunky can. She then moved to eating raw every 3rd day (and did great I may add).
She gained 3.5 lbs (approximately) and looks amazing. In time, everything will get back to normal.