Hi Emma
bless you , your little girl Darcy and your partner. ( made me well up as well )
you have had a tremendous change in all your lives the last few days and have a lot to cope with.
just be safe in the knowledge that you can deal with this and there are lots of us here that want to help in any way we can , so ask away with any questions.
it is tough at first worrying at night because you will think you don't have complete control but over time this will lessen with more nights under your belt -- the important thing to do is try in the early days to get a routine established and try to stick to this.
change can be introduced as time goes by but regular testing , injections , meal times , snacks etc will help build the confidence.