We use ours by just doing a “hot shot” of water in the bottle with the milk and then just cool the rest of the water needed in the nuby before adding to the bottle. That way you are only putting water in the nuby and can use multiple times when out 😁 xx
I do it the same way at mollie but I also have two because I use to do it with the milk in the cooler and not the hot shot way so when I was out and about I had two. Also sometimes I use to make the bottle half hour before I knew she would be waking up for it and by the time she wanted it the bottle would be alright for her.
If you use it the proper way you need to wash and sterilise it then it needs to reset for 3 hours. I have 2 so I can cycle them. If you are doing hot shot then you don’t need to do anything