Is my Daughter gaining enough Weight?

Hello

My little daughter at 8 weeks of age is having formula only, as we have experienced difficulties with her increase in weight.

She weighed 4790g when she was born, at the control at 5 weeks of age whe weighed 5150g, and yesterday at the 8 weeks' control she weighed 5500g.

I do see an improvement of her weight increase, but is it enough? How much should she gain in weight a week?

Best regards
Senia