please how can i get phd grant in Nigeria for my on-going PhD Program

Hi,
The University of Ibadan operates a Financial Aids Office, as a section of the
Student Affairs Division, where students may receive advice and assistance about scholarships, loans, and other financial matters.

Perhaps contact them if you haven't already.

I know there are Commonwealth scholarships but this would be to study in the UK.

Good luck.

thanks and God bless you sir