James Miller I was in a position two years ago to use the FE 60 days. It was made clear that no further extensions for FE reason allowed under my current visa, irrespective of how many extensions of stay or trips out of Thailand and then back in.
I'm not sure if that is accurate. As I understand, it's only 1 X family extension allowed per VISA, no matter how many extensions of stay. So as he has already used it up during the original 90 day initial non O, he wouldn't have any family extensions available to use.
If you are already on an extension of stay, then you can travel outside of the country during the "under consideration" period, PROVIDED the original expiry date of the current extension of stay remains valid and you re-enter the country (with re-entry permit) before the extension expiry date passes.
now thats overkill asking for both hahahaha.....when I was in Nonthaburi they required a hand-drawn map, since 2021 in Hua Hin a print out from Google Maps suffices
we used our mooban security guard for the first home visit when we moved to HH during Covid in 2021. As long as he agrees and has his Thai ID card on him, it should work.
If you have registered your new address in Bangkok, then you can go to the main Bangkok Immigration office to process your new 1-year extension. I did this three years ago in reverse - original 1-year visa registered in Nonthaburi, now my yearly extension gets approved in Prachuap Khiri Khan.