Dear aspirant hope you are doing well..

Don't worry, you can correct your mistake, when correction window will open. You can change your category, and other details filled wrong in the application form when correction window will open. It will notified in official site. You can also check on the site given below..

Important events are given for MHT CET 2022..

• Availability of MHT CET 2022 :  Application Form February 10, 2022
• Last date of MHT CET registration 2022 April 15, 2022
• MHT CET 2022 application form date with late feeApril 16 to 23, 2022
• MHT CET 2022 application form correction dates - To be notified
• MHT CET 2022 exam date - June 11 to 16, 2022

https://engineering.careers360.com/articles/mht-cet-application-form

Hope it's helpful thank you