How can I transition from renewing my retirement visa using the 800,000 method to the 65,000 income method in Thailand?

I done mine recently I payed the 65k in a month before my visa ran out . Done all the paperwork needed not hard to do .

Each extension is a brand new legal document. So you cannot change the premise of your current one, but when you next extend you can use either method.

You need to honour the terms of your current visa terms of your current visa while building up your transfer history of a full 12 months of 65k transfers from overseas before you apply for the next visa. So if you are already part way into your current visa you will need to use the 800k method again next year to allow you to build up sufficient transfer history. The good news is you can spend the 65k as it comes in

And you just need to leave the 800 000,- in your account 3 months after you got your visa extension. (2 months prior and 3 months after).

I would start depositing the 65k around 2 months prior to you renewing your extension with the 800k , and then after you have your 12 × 65 k , go in with the appropriate paperwork. ...

In short, you need to keep the requirements for both for at least one year.

You need to make at least 12 international transfers of 65K baht every month as of your 1-year extension application while you meet the requirements of the banked money method, i.e. have 800K baht in your bank account for 2 months before and 3 months after your (previous) 1-year extension application and keep no less than 400K baht rest of the year until you apply for next 1-year extension.

Better talk with your local office for details in advance..