Do I need a TM 30 for the 60-day COVID visa extension at Koh Samui Immigration?

The user is seeking clarification on whether a TM 30 is needed for a 60-day COVID extension at the Maenam Immigration office in Koh Samui, as the deadline approaches. A commenter provides a checklist of required documents for the extension application, including the TM.7 application form, TM.30 notification, passport photo, copies of relevant passport pages, an embassy letter, and the visa fee.