My excl. breastfed 4 month old son is having what I presume is a growth spurt - basically for the last 2 days feeding ( a lot)about every hour and half. Does anyone know how long it usually lasts. I am particularly worried as I have posted here before about my mad inlaws and their intolerance to frequent feeding and was hoping that it would be over by Wed when we go to them for Christmas.Am I being too optimistic?