I suspect it's still possible to get a Covid visa extension. Before your time expires, go to Immigration and ask for a visa extension. My brother was in Thailand for a year and a half on a tourist visa based on Covid extensions. You can try calling Immigration at 1111 but sometimes the information is unreliable. If you have the money and your visa still has 15 days remaining (and you're over 50), you can ask to apply for a retirement visa. Go with a Thai person if possible. Anything is possible in Thailand! Good luck!