Sharing my experience getting a covid extension today (January 5) at Chang Watthana.
I was on a 30-day extension of my TR-60 visa. With that, I was good to stay until January 31. This is the first time I've been in Thailand.
When my number was called and I spoke with the officer, she saw that I was allowed to stay until January 31. She said I should come back later because I still have lots of time and the extension would start from today. I told her it's fine, I have a flight booked home in the first week of March, so 60 days from today is all I need. She was surprised but said all right and issued it to me.
Really, my original 30-day extension was mostly a waste of 1900 THB to get what worked out to be an extra 5 days or so, but I've been stressed out wondering if I'd be able to get the covid extension or not, so I applied for it earlier than planned. You need the 30-day TR extension before they'll give a covid one anyway. Applying for the covid extension so early would have allowed me to make other arrangements if I got rejected.
Things I had but no one looked at: a (refundable) flight booking on my phone, a printout of my TM30, a printout of the isolation requirements I'd be subject to if I flew back home, and an embassy letter.
Also, the officer that gives you a number required me to go downstairs and make a copy of my TM6 and copies of EVERY passport page. The print shop downstairs didn't make copies of every page; guess they knew that was BS. The copy of the TM6 wasn't needed either and I've still got it.
TLDR : Answer Summary
The author shares their recent experience obtaining a COVID extension for their TR-60 visa at Chang Watthana, highlighting that they were initially approved for a 30-day extension but needed to apply for a COVID extension to secure their stay until March. They detail the process and necessary documents, noting that some expected requirements were not requested by the officer. In the comments, other users discuss their similar experiences with extensions in Phuket.