dd1 was formula fed and we never used the next formula up as she was quite happy with around 6 or 7oz per feed at this stage. dd2 is 3m, is happy and putting on weight but takes only about 3-4 oz each feed and then wants to feed again 2 and a half hours later all through the day. she goes 6-7 hours at night which is great but i have been wondering if the next stage formula would be suitable and maybe satisfy her for longer, but i don't just want to do it for my own convenience (ie fewer feeds in the day). it's like she can't take the volume of a big feed but she goes through it quickly, iyswim.