I am a survivor of Spindal Cell Sarcoma (2015) on my lower right mandible which they removed 4 teeth & 3mm of jaw bone. No Chemo/Radiation. Recovery itself was painful but not as bad as I thought it would be. I ate a minced & moist diet for a few weeks while the healing took place. I didn't have any long term swallowing problems. Because of the bone loss on the jaw I wasn't a candidate for implants & the tissue on the jaw grew back as sponge mucosal tissue & can't wear a partial. It took a while to get used to chewing on one side and I have to be concious of taking smaller bites & thoroughly masticating my food. It takes a while to eat. Hopefully you will be able to have a partial or implant.
I had surgery for a SCC stage II on 4/30/20 on the left side of my tongue. The surgery went very well, only taking a third of my tongue. They removed all the lymph nodes on the left side of my face. I have nerve damage & very little feeling below my jaw line. The Radiation was the worst part & I had my last of 33 treatments on 7/10/20. Liquid diet since 6/14 but I'm starting to eat small amounts of minced & moist food. Swallowing gets better each day. I didn't get a feeding tube but if I had a do over I probably would have. Lost 50 pounds but I had it too lose. Best wishes...