5 month old feeding schedule????


I am going back to work and I am wondering how much is the typical amount of breastmilk a 5 month old drinks per feeding and how often ?? I have a pump but never use it and it seems like my son is always wanting to be on my boob so I don’t even know how much he drinks !!! Now that I am going back to work I need to establish a feeding schedule for his babysitter !! Any advice !