It's an e visa you get online you could also look at a 60 day multiple entry tourist visa.
It lasts 6 months and allows you as many 60 days as you want just leave and each time you return you get 60 days ,even if it has only 1 day before the 6 months is up and you return you will get 60 days again
He may have a 60 day multiple entry that last 6 months stay 60 days get a 30day extension then you have to leave to get another 60 days.
I have the same e visa ,if you have got the same visa you don't need to get a 30 day extension just simply do a boarder run ever 60 days can leave as often as you want and get 60 days on re-entry.
Ask the people that will give you the definitive answer,the airline you are traveling with are the only people that will give you an answer you know 100% to be correct
I started seeing a Thai woman in January 2023 ,got her a visa to visit me in June 2023 filled in all the paperwork,she had her own business and a daughter so she had to go back to Thailand .
I got a 6 month visa last year for my girlfriend, booked return flights ,she had a business in Thailand and a daughter that was staying with her father ,3 good reason why she had to return.
Perhaps I should of asked, how long can I stay in total with this visa ,yes I can read and it clearly states 60 days but that is not the true story for this visa,thank you for you answer