Hello
@Michael52 Thanks for your message.
By correction I meant that if my levels before bed are higher than my bedtime target (but after my last quick acting has depleted) then I take extra quick acting to ensure they come down to target, so I don't wake high with high BG levels.
Basal is your background insulin - Protapane, Carbs are carbohydrates - as I count carbohydrates for my quick acting it means I can adjust the dose to meet the carb content of the food I eat, which gives me flexibilty over what I can eat. If you speak to your nurse about getting onto a Dose Adjustment for Normal Eating course (DAFNE), this means you don't have to take 3 set doses of quick acting, but instead will take the necessary dose as and when you need to (however this is based on calculating your carb ratio, something that your DSN or DAFNE can help you with).
I personally wouldn't snack before bed unless my blood glucose levels were below 5, as I wouldn't want to go high over night, so the fact you have eaten biscuits before bed and woke at 4.8 means that you're background level is too high, something that can be addressed by speaking to your DSN, and can be assessed if you attend DAFNE and this will be reviewed then too.
Hope this helps.