featherG,
I brought my bb to see GP on sat since she was down with fever and cough. She weighs 5.7kg at 6 month and doc told me to start her on FM. I asked why start FM when I'm TBF.
Then he asked me: "u sure you still producing milk? Could it be you not longer producing milk, that why she not putting on weight?"
I almost fainted hearing that. After I told him that I'm also partial bfing my #1 and also expressed out for storage then he commented FM will give more nutirent to the bb.
I think it really depend if a doc is pro-breast feeding. Though my girl on the smaller size but so long she is active, I think I will still bf her till she is 1 year old or more.
If you are introducing FM for the 1st time, give her some time to adjust to the taste. you should see the improvement over times.