My 5.5 -month old usually loves to eat - he's a very healthy 9kg and has never refused the bottle. But over the past week, he's become fussier and fussier. Instead of taking his usual full bottle 4 times a day, he's virtually halved his milk intake and is now very fussy to feed. We haven't started solids yet. Any advice would be much appreciated. Do I need to worry? He doesn't seem to be coming down with anything (no fever, seems happy enough other when it's time to take a bottle). Of course he's probably teething - no teeth yet but there's been plenty of dribbling and gnawing on stuff for the past couple of months.