Can I change from a tourist visa to an Ed visa while in Thailand without leaving the country?

Hi! I am moving from spain to chiang mai on ed visa to study at CMU. I paid the course already and got all my paperwork ready but suddenly the embassy in madrid closed without pre notice and now i have to wait until they reopen next year to apply.

I could go as turist (so i dont need to change my flight and ASQ Hotel booking and etc) but i cant move my stuff and get it there with this turist visa, so i need to change to ed visa there to be able to receive (import) my belonggings. My doubt is...is this possible to do without having to go outside the country? I asked CMU and they told me they cannot ensure the ministry will approve my visa..has anyone done something like this? How did it go? TIA