He is bottlefed btw. Large lad (around 20lbs) and for the last 3 days has been taking only 1-2 ozs per bottle instead of 7oz (6 bottles a day). He fights and screams when I try to force encourage him to take more.
He does not have a temp, is not sleepy and as long as he's held is smiley and gurgly and his usual self. The other DCs have had flu as has DH but he does not seem to ill at all.
At what point should I start getting worried that he's going to waste away??