Dear aspirant

NEET is the official entrance examination all over the country for students to get an admission in medical colleges to pursue MBBS degree

In NEET  online counselling you can choose how many colleges you want. Even you can add all the medical colleges in India to this list. But one thing is vital that you will be allotted only one college from the chosen options in a particular round . There are different rounds of counselling . Suppose in first round you have been allotted the 30th number colleges then in the further counselling you may be allotted any of the upper 29 colleges . If not then you have the seat of that particular 30th college but you can not further get the receding colleges after the 30th one. So counselling choice filing is the most vital thing and it should be dealt with proper plan.

you can get every detail of NEET counselling here

https://medicine.careers360.com/articles/neet-counselling

best of luck