So confused about formula feeding... On the instructions it says boil the kettle and leave to cool for 30 mins and no longer. So does that mean I can use the water after 10 mins then cool under a tap? Or does it HAVE to be 30 mins? If every feed has to be made up as you go how do you get on during the night waiting for the kettle and when you're out ? 35 weeks pregnant so confused with all this 😡😡😡😡😡