nobody knows for sure yet. Not even tax experts in Thailand, so you have ti follow this topic close AND talk to an expert when the potiticians agree how to internet the law - and it will probably take some time.
You could do a border run. Flight from Krabi to Kuala Lumpur. When you return to Thailand you will get another 30 days. With ThaiAir the tickets are cheep and the flight takes just 1h30m