Which immigration offices in Thailand allow a COVID extension for tourist visas 45 days before expiration?

The user is seeking assistance with obtaining a COVID extension for their tourist visa in Thailand, which is set to expire on April 29th. They have already applied once for an extension and are currently in Trang, but were informed that extensions can only be requested 30 days prior to expiration. They mention that the last date for applying for the extension in Trang is March 25th, making it 34 days before expiration. Comments suggest that Koh Samui and Chiang Mai might offer the 45-day extension option.