Hi just want to check something. We are going away just for the weekend in our caravan. DD is 61/2 mths mainly bf but has the occasional bottle. Will I need to take the steriliser (along with everything else) or would I be ok to sterilise the bottles before we left? or would it be ok not to sterilise yet. I make the bottle up and use it immediately (dont know if that makes any difference) I bought some of those disposable bottles but they stink of plastic, not sure that DD is gonna take to them (she didnt when I tried before. Thanks