What is the process for extending a tourist visa at Phitsanulok immigration?

Quick report from Phitsanulok immigration.

They handle tourist visa extensions like most offices do obviously. When applying for an extension, you have to get the 30 days tourist extension first, before they will give you a 60 days Covid extension.

Not much going on. I was done within 30 minutes. Regular paperwork required (TM7, passport copies, photo). Actually, I needed a bit more, but that's because I'm staying in a friend's house, and she had to file a report for me staying there first.