Hi everyone - new to here - so I'm hoping someone will have some advice. We started giving my son a bottle as his last feed of the day (around 7pm) just after Christmas as he wasn't gaining weight. Since then - he has gone from being a good sleeper (only waking once around 2.30am) to an absolute nightmare. It seems to me that he is struggling with wind - he burps and passes wind nearly all day and when he does wake at night (which is currently every hour!) he lets out a high pitched cry so I know he is in pain. We've tried different bottles, and use infacol/gripe water but nothing seems to be making any difference at all. I can't seem to get enough milk out when expressing to give him that instead of formula - and I'm just so tired I don't know what to do. He's breastfed the rest of the day and in the night - but as I am going back to work soon - I was hoping to make the switch over to bottles but I am worried I will cause him even more problems by doing this. He's 18 weeks now so I would have thought that his "gut" was mature enough to handle the formula (we're using Aptamil). Please if anyone has any advice I would really appreciate it.....don't know what to do and hate seeing him in pain.