My little girl will be 6 weeks on Monday and weighed 9lb 10oz last Thursday. She has been having 5oz of formula every 4 hours although over the last week she has only been getting to about 3 hours and then screams for a feed. When i feed her and stop to wind her she screams the place down and throws her head about like she is looking for her bottle and also does this at the end of the bottle. Is she looking for more milk, should I up her to 6oz or is that to much? I tried her on hungrier baby milk but it made her unwell.