You will need the 800k, but not the insurance, that is not a requirement for a Non-O based on retirement/over 50.

When you extended, you could have bought a re-entry then, or you could have got one at the airport before your flight. As I said, your OA extension is gone, if you wanted an OA again, you would have to apply in your home country. Or you could get an in country Non-O and then extend that, (with no health insurance requirements).

Not exactly sure what visa you had, but presumably a non-immigrant or extension thereof. Sadly the answer is whatever you had, has now gone because you did not get a re-entry permit prior to leaving the country. You are now on a visa exempt entry and will have to start all over again.

@Steven *****

Great, but does not change your lack of parental rights :-)

@Jacob ******

How will he attend classes when 50% of the time he is not here?

To be honest the DTV is in no way shape or form designed for you in your situation. That said, there is no multi-entry visa designed for you either. Your child looks pretty newborn, so guessing that you have not been to family court to gain parental rights? Therefore legally in Thailand you have no parental rights, so any year long extension is out of the picture too, (because you and the mother were not married). You could pop over to Laos and get a single entry Non-O based on having a Thai child, and then extend that by 60 days, but how that would work with your rotations would take some planning. Or just keep coming visa exempt until you get pulled to one side. Unless you are over 50 and then you could apply for a retirement visa and subsequent extensions.

@Jeff ******

correct, either or. If changing to monthly, then first year would be both.

And one for changing funds

A generic list of how to go about getting a Non-O in country

Check with your local office if they will accept your 65k income for the initial Non-O, I think a lot of them make you use 800k for the first visa and extension, and then after 12 months of payments allow you to change to monthly income.