My daughter 19 autism non verbal is on novomix bd for lifestyle purposes.
Whose lifestyle? Do your daughters carers test her blood sugar? Do they understand how to treat a hypo? If not, why not? Testing blood sugar and treating hypos isn't a medical skill, DSNs will provide training for teachers in primary schools for type 1 kids, so will be able to provide the same to anyone looking after your daughter.
Novomix will require a fixed amount of carbs at meals and snacks at fixed times each day. It sounds like the amount of carbs required by the dose your daughter is on is yet to be determined - if she's at 12 or 13 I would suggest less carbs? If it's dropping her from 13 to 5 with a carby meals that suggests she needs a carby snack 2hrs post meal, everyday. Is your daughter amenable to eating every 2hrs, every day?
Novomix has a mix of fast acting and long acting insulin. What novomix are you using? With novomix 30 the mix is 30% fast acting and 70% long acting. With newly diagnosed honeymooning type 1s they do often need more long acting than fast acting, occasionally a newly diagnosed type 1 can be fine on only long acting insulin for a little while. The response to eating insulin production can hang around for a little while, it can also appear rather erratically and shove out a bit of unexpected endogenous insulin in response to meals as part of the honeymoon. When using mixed insulin you don't have the option of reducing or omitting unneeded fast acting insulin unless you also reduce the needed long acting insulin.
A more modern, flexible basal bolus regime will let you alter doses as demanded by the honeymoon. Or by not wanting to eat the same quantity of carbs at the same time every day, or wanting to do some unusual activity, like go for a walk.
A mixed insulin regime doesn't mean less testing. I don't follow on what basis an old fashioned rigid regieme had been chosen for "lifestyle purposes"?
it was 5.4 a hypo for her....
5.4 is not a hypo, for anyone. It might be a false hypo because your daughter is running high. If you treat the false hypo and maintain the highs you are not going to be able to get her body used to normal blood sugars and she will just stay high. A basal bolus regieme allows you to step blood sugars down slowly. I'm not sure how that gradual step down would be worked on mixed insulin.
I think
@urbanracer uses a mixed insulin regiem, he might be able to offer some assistance in figuring out how many grams of carbs the mixed insulin wants at meal and snack times. With mixed insulin you have to do what the insulin wants. The idea of basal bolus insulin is that you make the insulin do what you want.