Transfer of ownership rights to parents

Nearly 7years back I'd purchased a 2bed room apartment jointly with my father and mother in sub-urban Mumbai, as the loan company wanted the applicant and co-applicant in loan to be a co-owner in the property. Few years back the LOAN for mumbai flat was paid up fully. On the sidelines couple of years back I jointly purchased an flat in NOIDA with my spouse on loan. I've a younger brother, yet to be married. Now he is working in Mumbai. As I already own a residence in my name alongwith my wife in NOIDA. I would like to give up my share in the mumbai apartment. My father and mother are both medically dependent on me and living with me, due to brain stroke last year my father is medically unfit apart from his Diabetes/BP/Retinopathy/Hearing Loss, and hence is retired from his job. My brother can thus live in the apartment while paying our father some rental and saving tax as per prevailing IT laws. Please let me know what would be the procedure to give up my share in the mumbai apartment, with minimal /no financial impact on either of us me / my parents/ my brother.