Hello Aspirant,

See class 11th details are optional and even if you do not fill it or fill 00 in every column then also it will be accepted, so it is better you leave it as it is if you don't have class 11th details.

As you are preparing for NEET 2022 for which around 2-3 months are left from now so now you should practice previous year's question papers and sample papers as many as you can because it will enhance your self-confidence and time management skill
https://medicine.careers360.com/articles/neet-sample-paper
https://medicine.careers360.com/articles/neet-question-paper

You can also solve the Test series for NEET UG 2022 for better finishing of your preparation, you can get the Test series from the link given below :-
https://learn.careers360.com/test-series-neet-may/

I hope this information helps you.

Good Luck!!