Hi summer, i'm just going to tell you something about my 4 month old it may help it may not.
She was EBF till about 8-9 weeks old and then combined fed till 2 weeks ago. Her sleep has always been horrendous her normal pattern is one sleep which is between 1-2 hours long. Then separate sleeps for the rest of the day which last between 10-30minutes long. We counted and she sleeps about 5-6 hours at most in a 24 hour period.
As i was increasing her FF's and decreasing her BF's we noticed a huge increase in poo from 1 a day to 6-7 a day and she sharted alot. So we swopped from apatimil to Cow and Gate. The poo's decreased but only to 4-5.
She has also vomited after most feed since she was born the Dr refuses to say its reflux although my HV is convinced it is. Anyway since swopping to FF her vomits all increased as well and she vomited between feeds as well. Also she really seemed to struggle against being fed and only took small amounts buy did this quite often.
Anyway the HV came on monday i sobbed my heart out. I was exhausted i just wanted her to sleep for a longer period and the HV said that her sleep pattern was abnormal. It was her that made me look more closely at bowel habits and vomiting habits. When we discussed the above and her sleep pattern together, the HV was able to come up with a couple of answers.
First she asked me to take my DD to the GP and ask him about a milk intolerance and also to talk about reflux Again So we did this we are now awaiting the results of a stool sample to see if she is intolerant to milk. GP refused to prescribe anything for reflux until the results are back though.
The HV also told me that cow and gate do a formula called cow and gate reflux and suggested we try that. She said they only sell it in boots though.
We managed to get hold of it and have noticed a huge improvement in her. She hasn't vomited since thursday, only has 2 poos a day and no sharts. Her poos where previously burning her bum despite me changing her bum as soon as she poo'd. That seems to have stopped. Also she is sleeping more settled shes not thrashing around in her sleep and has managed a 3 hour sleep 


but more amazingly tonight she actually self settled.
If you buy the cow and gate though please bare in mind that it is quite thick we've had to go to the next teat size up so DD can get it out.
Sorry its a mammoth post i was hoping it may help you, sorry if it doesn't. Also maybe think about joining a postnatal thread on here, i'm on the december 2012 thread, its saved my sanity at times