If this is for entry into country
Speak to your insurance company ask them if the will give you a cover letter specifying that the insurance covers covid stuff up to a value of
*****
0 US $. If they do your ok if not you will need insurance for the 3 months when you enter thats about 8000 baht for 3 months
AXA i think is 7200 Arawan Namak is about the same but cheaper for long term.