Hi Gumboot,
My first daughter, Charlie, was born weighing 9lb 9 1/2oz, due to my gestational diabetes and I had the same problems breast feeding her. She was on compliment feeds from day one, then by 3 months old, she would have a breast feed, then the next feed would be a bottle. I simply did not have enough milk for her and she had reflux. I even had to sign a document(while I was in hospital) to say that I understood that breast was better but I was choosing to bottle feed. I had a fight with the mid-wife(who made me sign the document!) about giving her the comp feeds. She told me it wasn't necessary. Then the same mid-wife, after weighing Charlie before our release from hospital, told me that she had lost more than half her birth weight and that I should give her comp feeds because my milk wasn't enough!!
I wanted to try breast again with my second daughter but she wasn't gaining enough weight so I used the same routine with her that I did with Charlie. Aria is now nearly 10 months old, Charlie is 4 and they are both healthy and happy children.
I worried myself stupid over the breast/bottle debate(even with Aria)and I came to the conclusion that every mother and child is different. Different things suit different people and if you and your child are happy and healthy with whatever you're doing, then that is all that matters. If anyone tells you it's wrong, you tell them to mind their own business!! Hope this makes you feel a little better.