Do I need to maintain an 800K balance for my Non-O retirement visa in Thailand?

The seasoning requirement for banked money method on year long retirement extensions is;

You needed the 800K baht in the bank for 2 months before you applied for the extension.

The 800K baht has to stay IN the account for 3 months after the extension is granted

and

then you have to maintain a minimum balance of 400K baht in that account the rest of the year

So the funds stay at or above the 800K baht until March 2025