Can I keep my 400,000 THB in the bank for my Thai marriage visa until better exchange rates?

The user has obtained a Thai marriage visa and wants to know if they can maintain their 400,000 THB in the bank without exchanging it for a better rate. There is confirmation that as long as the required balance is back in the account 90 days before the next application, it is permissible to use the funds as needed. Comments suggest varying opinions on whether to keep the money untouched until necessary for renewal or to utilize it while being cautious about timing the currency exchange.