@Ste***
yep in Bangkok, as long as you meet the seasoning requirements for your proof of funds you can apply any time after April 23rd (when you have 45 days or less left on this current extension)
Remember for seasoning of funds it's got to be in the account for 2 months from when you APPLY for the extension not from when your current extension runs out.
Other than that you're good to do it :)