Am I feeding my pup anuf

Sareece • My name is Sareece me and my fiancé been together 2 years now we sadly had a miscarriage last year on 22/10/14.
I have a 8week old Staffie. I'm not shore if I'm giving him a of meat he has a full tin a day and I have his biscats down 24/7. Should I be giving him more that a tin of meet a day?