It would be best if you have treatment history in Thailand. It’s some sort of medical tourism. I got mine with medical and I have history, and one prior appointment letter from the hospital.
I think you can go for medical route, my doctor wrote one more month, but I’ve attached my previous appointments too, so embassy will know it’s not just a random issue, and will have more follow ups along the way.
yes it seems like that to me too; that’s why I chose this route.
you just need confirmation letter from your doctor with Hosptial letterhead, and an appointment letter from the Hosptial. For the letter, you can simply ask them to write you a letter for visa extension. They will do it for you.
Then make a follow up appointment.
If you have ongoing medical history in Thailand, it would be the best. I have on going treatments so it was really easy for me.
you can do it from anywhere as long as you are in Cambodia. Some say they do it with 1 month, some says 6, and I chose the safe option. You can always try your luck i guess 😅