Is it permitted for a bank account to drop below 400,000 THB for 5 months before renewing a non-O visa based on marriage to a Thai woman?

For holders of a NON-O visa based on marriage to a Thai national, it is acceptable for the bank account to drop below the required 400,000 THB for a short period. The main requirement is to maintain the 400,000 THB balance for at least 2 months prior to the extension application. Once the extension is granted, there are no requirements for maintaining this balance until 2 months before the next extension.