place a face towel under his head when feeding.. so at least wont b too hot for him and he wont sweat soo much.
on the fan instead let him get used to fan 1st.but dont direct blow at him.
the baby kan jiong drink too fast? or maybe the holding of bottle wrong? but i guess it should be okie.. you may like to check with the hospital they have parentcraft and they will help you.
Try calling them.