Hello aspirant,

Yes you are required to fill a seprate form for BHU. You need to fill the application form in online mode for each round of BHU MBBS/BDS admission 2019. Before filling the BHU MBBS admission form 2019, you need to enter their NEET 2019 roll number, asked personal details and a password must be created. Availability of application form  will be from 2nd week of june. 

You may read the whole article: https://www.google.com/url?sa=t&source=web&rct=j&url=https://medicine.careers360.com/articles/bhu-mbbs-application-form/amp&ved=2ahUKEwjyl9vl9fziAhUZfysKHRiXDicQFjABegQIBRAC&usg=AOvVaw39elnHFmxpJxMPlW_4IsKq&ampcf=1

Best of luck!!