I'm planning to slowly switch from b/f to formula for my 6 month old. My only concern is that she wakes arond 6am ravenous - the formula we use, Hipp Organic, can't be prepared in advance and I need to boil a kettle, wait for 30 mins, mix with formula, then wait for 15 mins. DD will not like this at all! I can't use another formula as I've been unable to find another organic, vegetarian one. Any advice would be fantastic, thanks.