I'm over the moon now!
Fifi gained well for the first three weeks, born at 4lb 8oz she was now 5lb. A few days later she was 4lb 15oz and stayed that weight but 10 days later she weighed 4lb 14oz. The NN-MW was worried and told me to express some to top her up with. I did about every other day and a week later she was 5lb 1oz, a week later 5lb 9oz and now another week on she is 6lb 1oz!
I can't believe the difference in her
I think though that the turning point was when she hit term.