Let me just start by saying that I am not an expert.

I feel terrible that you have been made to second guess yourself. It sounds to me like you are doing an absolutely amazing job. The thing that I found after I had DS, almost 6 months ago, was that everyone was telling me something different. It was so draining.......I felt that what I chose to do was the right thing for my baby and me. You say that your baby is healthy, sleeping, getting enough to eat, has lots of wet and pooey nappies. I say stick with what you are doing. It sounds like you are BFing more and using the formula less so whatever is working for you - you should stick with.

Also when I came home it took me ALL day to get 60mL (if I was lucky!!).

Keep it up - you are doing a fantastic job!