Apply for your One year extension of stay as retired ASAP as
@Ellie ******
posted June 4 is the earliest.
IF you wait , you will have to START ALL OVER.
Go to your local Thai Immigration office on Tuesday and ask them for their list for your one year extension of stay as retired.
Thai Immigration offices are CLOSED on Monday June 3.
The graphic below is the common found requirements for the one year extension of stay as retired.
Be sure you have a TM30 address registration on file with Thai Immigration.