That would get done when you do your extension. Still have to have the 12 month bank statement to go along with the credit advices. Just make copies of all of the months that you would need them. My extension is in December and January and February were still FTT codes so I will be submitting advices for March through December
can easily be a 100,000 baht or more, depending on how many internal injuries. I have spent over 100,000 on one of my dogs, so speaking from experience.
have to do in person, there is a form which you have to do. After it is complete they will email you the credit advices. Just let them know that you want to start from the first month of the code change. For me it was March.