can anyone help I have the tomee tipee go prep and am using the MAM bottles. I am trying to understand the hot shot method to mean I can make more than one bottle for him when out and about. My question is how water much do I leave in the bottle for the hot shot as the minimum measurement on the MAM bottles is 60ml ? Also once I use the cooling flask do I need to wait 3 hours before I can use it again? Thanks