What are the procedures for obtaining a COVID-19 visa extension in Bangkok and what reasons can I provide on the application?

I want to get my first covid-19 extension, already did 45 days exempt + 30 day ext. I'm in Bangkok. (1) Since I may change accommodations ASAP, I'm worried about not having my passport for hotel check-in. What's the most days I may be without? (2) On the covid form, is there a preferred safe chocie to my reason on the BKK form PDF? Checkboxes A "I am not permitted to enter the dest. country ... " B "The embassay / consulate is unable to issue the letter of confirmation and request a temporary stay." C "No return flight or airline available" D "Other". My real reason is that I feel safer not traveling & cases are high at home (more unsafe). (3) If I can get 2 covid extensions, does anyone know in BKK what is the earliest I can go back? do they follow the "when 45 days are left" rule here? Thanks in advance, you guys are amazing!