Our LO is 6 months and farting seems to really bother him, it also did before we started on solids. It wakes him up at night and during the day he will often not take much of his bottle as he's straining to pass wind and cries like he's in pain. We've tried c&g comfort, stage one and hungry baby, SMA lactose free (for his eczema), aptimil stage 1, hungry baby and he's been on their comfort milk for over a week but it's not helping. He's prone to constipation. Have tried Infacol, gripe water and baby massage but not much helps. He's teething like mad, could this be a cause? Any suggestions?