If I remember correctly, you're using libre?
There's a thing called, "waiting for the bend". Inject, keep an eye on levels, when they start dropping, that's a good clue that the insulin has started working, so there's a fairer chance you won't get a spike.
Stephen Ponder's book Sugar Surfing discusses it.
It can be done with libre. The graph is made up of 15 min averages, so can be difficult to spot the bend, but it'll do a new reading every minute which makes it easier to see with a lot of scans.
Getting one of the transmitters, blucon or miaomiao, makes it a lot easier as you see another blue dot every 5 mins, so the graph is more "live" than the averaged libre one.
I don't do it all the time - life is too unpredictable for that - but I spent some time playing around with it in the early days and got a clearer idea of how long I needed for a range of meal types.
Something I quite often do late afternoon, around 4pm, when I'll be heading back home for tea about an hour later, and I think maybe my basal isn't pulling it's weight, or I've maybe had a slow digesting food like beans at lunch and the novo for that is wearing out, is I take, say, 2u. That'll take care of the tail end of lunch and also means it'll be at peak effect by teatime. Prebolus by about 20 mins for tea, so I'll have both that dose and the earlier smaller one working in tandem, and it can work out with a downward curve and rise instead of a spike.
Pic below shows it working well, 2u at about half four is bringing me down going into a 25 min 9u prebolus for 75g tea at about 18:20, drops to 4 before a rise to 6.
It's easy to overdo it, though, lost track of the number of times I've gone mildly hypo while waiting for the food to kick in. Still worth experimenting with, though.
Thanks Scott for taking the time post. Willing to try anything and this looks to be an interesting approach. You are right I have the Libre, but just that.
It all well and good going to diabetic clinic and listening to DSN and doctors; however you guys on here have the day to day experience of type 1 and what its like and I find that invaluable
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