Can I wear umbrella cut churidars

Hello there,
Yes, you can wear but it should be light coloured and half sleeved. Please avoid clothing with heavy embroidery, flowers and buttons. It is better to wear a simple light coloured  top or kurti. Please carry your mask and gloves.
You can go through the guidelines in the link given below:
https://medicine.careers360.com/articles/neet-dress-code
Hope this answer helps you.
Good luck!!