is there such thing as similac infant sachets?? i am exculsively breastfeeding mi boi bt want to buy those small packets(if there are such available????) or those 400g tin for situation whereby i am not able to breastfeed mi boi...why similac? cz he was on it before i start breastfeeding exclusively..

and anyone used milk powder beyond 1 mnth? 1 tin?? cz i know they have stated that once opened,it can onli be kept for 3 weeks?