Burmise have Non LA visa which is way more easier to get. I don't understand you why you pursuing expensive option. I don't think Thailand wants to attract Burmise on DTV visa.
problem is that on beginning of DTV you could qualify with one week of cooking course. Now that is unlikely 😕 and you need to spend a lot more on cooking course. Additionally if your parent has health care difficulties you can do this way. Because on beginning people were getting DTV just based on dentist appointment. No school or medical establishment will guarantee you a visa.