What is the required duration for a COVID-19 insurance plan when returning to the US from Thailand with a NON-O re-entry permit?

Greetings from Krabi: if I go back to United States from Thailand with a re-entry permit related to my non--O retirement extension of stay, how long of a covid-19 insurance plan would I need to show? Would it need to go all the way to the time that my non-O extension requires? I have excellent health insurance but it probably won't be accepted by the Thai government, so the shortest covid-19 policy specific to Thailand that I could use, the cheaper it will be for me.