I'm only breastfeeding and lately my baby (almost 10 weeks old) has been so fussy, very gassy and has a hard time pooping. What can I do to make it better? We're "cycling" with his legs, give him tummy massage, burp him until he's fed up with it. I've tried to eliminate dairy, eggs, onions and gluten from my diet but none of it seems to help. What else should I do?