It sounds like you have never been here before. Before my first trip in 2012 I bought a guide book. Sure it costs some bucks, but if you are really serious about spending 1000s to come here, 15-20 bucks is a good investment. read about the country, specific places will list commercial interests who provide, such as scuba diving, elephant rescue parks, etc. You can then email the establishments and see which ones are open. The would be a more thorough job, online you'll most likely hear personal opinions, and good but limited.
I am a little confused. From. your post it sounds like he went in for your 60 day Covid extension. If that’s the case, why do you have to go back in February? No problem getting the Covid extension here in Chiang Mai
I arrived at about 11:15 PM in Bangkok. Because of a snafu I didn’t get to my hotel till about 1 AM. The day I landed, the previous day, counted as day zero. I don’t know if there’s any official policy that says the day zero begins the day you land on the airport, but that was my experience