I will give an advice as someone who spends 4-5 months a year in Thailand on tourist visas, or exemptions, and who at one time had an ED visa (which has not attracted any attention from immigration). Don’t attempt more than two trips a year without a long term visa, 4-5 months is possible, but more is risky.
I use UPS a lot in Thailand, very good customer service. Try contacting them by phone, or walking in at the headquarters in Soi Lasalle, Bangkok to get information.
If you do manage to get another ED visa it will not be for beginner classes.
I had the initial 3 months of ED visa and left the country for an emergency and when I came back 2 years ago I tried to study at another school and I had to provide transcripts from my first school and I was told that I would start from an advanced class, not beginner due to already studying for 3 months
I had one of those a few years ago, but had to leave the country due to an emergency and they simply stamped me out. Returned many times since then and I was never asked about it.
Just so you know, if you want to study Thai again and receive an ED visa, you need to get your transcripts from your former school and hand them over to the new one in case you want to change schools
I doubt with what is going on now that there will be a 30 day visa exemption and you could still extend it anyway, like in the past, or get a tourist visa
some of us have money and I understand why they would abuse exemptions and tv’s since there are no written rules regarding how long you can stay. If Thai authorities want to stop what the OP is doing they should write some rules (like 180 days on x visa and so on)