Technically it would be impossible. I have tried, alone, several times at the immigration office and they have told me that the procedure is the same as before Covid, that is to leave the borders and return. It takes about 21 days to get the only letter from the Minister plus other weeks for the rest but now the I. O. they don't issue visas Ed. If you contact the agencies, instead they will tell you that it is possible and that they do it in 7-14 days. I don't know if the visa is valid though. They asked me from 25K up to 98K. Two tried to scam me. You can try to contact the schools. It's better