I’ve just started having problems with this. Sort of annoyingly the first time a doctor is taking proper notice of the specifics, I am struggling to control it all! the first two years of type 1 I had HbA1c’s of 7-9, my last was 11 
@Stephen: when you say night time bgs, do you mean before bed? Or waking up specially for them? Waking up isn’t gonna happen for me, I’m only just getting the hang of going to bed before nine thirty and still feeling tired (c’mon, 07:30 start at work isn’t right when you’re a night person!), so I guess I’ll keep winging it with steadily increased morning break snacks – hopefully!
Good luck with it Andy – if you find something that works, let me know! 