I have a weird suggestion but maybe your mouth misses having something to do. Since you aren't doing all that chewing anymore. Have you tried maybe getting some lollipops? this could ease the habit of chewing. I use these when I get cravings and they help me till they pass: https://www.amazon.com/Dum-Dums-Original-Pops-Value/dp/B01M9DRD1Q/ref=sr_1_5?dchild=1&keywords=dum+dums&qid=1621437597&sr=8-5
If you go this route, don't forget to brush more often due to the sugar. But they really helped me.