You are referring to a border bounce for new visa exempt entry.
OP, has not indicated which immigration office he is dealing with.
Obtaining a 30 day extension is best option if that covers time span for holiday plans.
Certainly not the best immigration office. Here is thread with experiences.
Including using "agent"
https://aseannow.com/topic/1318842-jomtien-immigration-still-same-30-day-extensions-can-only-be-done-1-business-day-prior/