Hi
@ellie09
I am assuming you are T1 and on a basal (background insulin) / bolus (short acting insulin) regime. If this is not the case you should probably ignore the rest of this post.
As
@In Response said, the basal insulin is meant to keep you steady when you are not eating and not injecting bolus (typically if you go to bed a few hours after having an evening meal and its bolus then if your morning level is the same as your evening one then you know the basal is right.
Once your basal is right you can use your bolus both to balance the carbohydrate in your meals and, if necessary as a correction dose to bring your levels down if they are too high. Your team should help you work out whether your basal is right and then supply you with ratios that allow you to calculate how much insulin to give for carbs and how much insulin to give as a correction dose.
People vary massively in how much insulin they need so dosing is a very personal process and only experience will tell you how much your particular body needs. And insulin needs can be affected by all sorts of things - illness, exercise, hormones. Some T1s joke that the colour of socks they wear in the morning makes a difference.
Hopefully your team are in very close contact with you at the moment and helping you manage your levels down. My 3 3suggestions would be
1) Feel free to pester your diabetic care team with questions (as well as these forums, but we're not allowed to give dosage advice)
2) Don't panic if it takes a while to get the hang of things
3) Always have sugar with you in case of hypos (low blood sugar)
Good luck
ps And when you read the posts by T2s here remember that their condition is
very different to yours.