If you don't think infacol is working well maybe try an alternative brand such as colief.
You can also buy anti colic bottles that are better at keeping out air bubbles as they feed. I wouldn't try hungry baby milk just yet but if baby continues feeling unsettled maybe talk to Dr/HV about things (it may not be just wind but possibly other issues such as a dislike to the protein in the milk or an intolerance to dairy...)