We have just moved Harry onto formula and I am worrying about how I should make it up ... does everyone follow the new guidelines about making it up with boiled water cooled for less than 30 mins, and then let that cool enough for the baby to drink it (which seems a real faff - and a bit impossible to get the timing right if you are letting the baby demand-feed)... or do people make up the bottles of cooled boiled water in advance (and make up the feed with water at room temp)... or do people make the feed up in advance and keep in in the fridge?? I am probably over-thinking this, but it all seems SO much hassle to do it properly and yet if baby was ill because I couldn't be arsed to get it right I'd feel awful ....