Hey!

AIIMS MBBS eligibility

• Candidates should have qualified 12th board or equivalent examination of 10+2 education system recognised by AIIMS Delhi.
• They should have also studied Physics, Chemistry, Biology and English as mandatory subjects in their 10+2 level.
• In addition to the above conditions, candidates belonging to General and OBC categories should have secured a minimum of 60% marks in the aggregate of aforesaid subjects and those belonging to SC, ST and OPH categories should have obtained at least 50%.
• Candidates should have completed a minimum of 17 years of age as on December 31.

so as the eligibility says, you must have 60% aggregate in class 12. so it seems you cant get admission.