@Philipp **********
"Hello Graham. About the two Non Os. So each one of them is for 90 days. Do I need proof of funds when applying (at an embassy outside of Thailand)? Are you sure I can apply twice a year for a retirement Non O? I currently am on a marriage Non O that will expire, no funds at all at the moment."
Yes, Embassies approving eVisa applications have their financial requirements for Non-O retirement applications which equates roughly to 800k banked or 65k per month income in the local currency in any accessible bank account in your name. (400k and 40k for marriage). See their website for details.
Two Non-Os from RTE London 6 months apart is exactly what I have been doing since before covid (except for the lockdown).