In general there are no BIRTH certificates available from India. What you would usually hope to find are Baptism records - with the main source being the India Office Records held at the British Library.
Recent years have seen the further indexing of these records on
www.familysearch.org, a wide range of records is available on the FIBIS data base
www.fibis.org and some on the British Library IndiaFamily search
https://indiafamily.bl.uk/. However, all these sources tend to respect the 100 year rule and don't include birth events more recent than this. So, Sal, you will need to do a personal search at the BL or get someone to do it for you.
Anyway, do keep checking the FIBIS site as new stuff is always coming on line.