Hello,

If you passed your 10th class in 2020, then may be you should take admission that year in 11th class m if you are not admission yet then new admission in 11th it's not problem. But if you are already studying in 11th then your registration also occur for 12th from recent school. So the transfer very hectic and some schools don't give the transfer certificate also. If you have really some big problem or family issues then talk to the school authorities and try to convince them. If they are agree with you and give you the certificate then the new school if ready to admission then you will change the schedule in 12th class. Otherwise can't possible dear.

All the best.