I just talked to Immigration Phuket this week about exactly that... they said it's possible from any Visa (TR, Visa excempt or VoA, Non-O) but not from "Non-O-A". Then you have to do the "Retirement-Extension" first (after Covid-Extension) or leave the country and come back with any other kind of Visa.
But sometimes you are lucky... the H2DO in Bangkok is also a "State Quarantine Facility", nothing to complain about it... nice room, good food, fast internet, many tv channels, balcony, and, and, and...