How can I extend my 60-day visa in Thailand and what is the process at the Chaengwattana Immigration Office?

Freddy, who is currently in Bangkok with a 60-day TR visa expiring on July 27, is seeking advice on extending his visa by another 60 days using the COVID visa extension option. One commenter advises that he should confirm if he has already obtained a 30-day regular extension, as some offices require this before applying for the COVID extension. They recommend heading to the Chaengwattana Immigration Office, specifically Counter J for tourist visa extensions, and suggest searching for more detailed requirements on the topic.