Hello aspirant

Hope you are doing great there . See , yes you can definitely switch to a non attending school in class 12th after completing your 11th from a regular school . But there is a disadvantage for the the same . If you get admission in a non attending school at class 11 , then you have to pay quite less amount for two years . while for enrolling in 12th that is for only one year , the price is almost double from that for admission in dummy in class 11th , it is quite unreasonable , I know . You can check for various dummy schools on google , and if you are taking any coaching classes , I would suggest you to enroll in dummy admission through them . This will prove beneficial for you at the time of practicals.

I hope my answer helps

Wish you all the very best!