my ds (4hlf mths)refuses to take formula , currently b/f but am trying to start weaning him onto formula feeds in preparation for my rtn to work. I used avent teats, then switched to nuby teats ...tried formula , he developed a rash round mouth which indicates he has a cows milk allergy ( my dd1 has cows milk allergy so the signs r the same) so switched to soya formula...still refuses it , he eithers pushes the teat away or just blows into the teat !....any tips ?