When I went on to the pump a month ago, I did the following:
Baseline MDI: Levemir - 8u @9.30pm-10.30pm; 14u @8am. I used to see an steady BG increase from about 6am due to the overnight Levemir running out.
Based on pumping insulin, I reduced my basal dose to 90% of my MDI dose, which turned out to be way too high, and it transpired that I needed around 75%.
Based on my Levemir split and observations of levels in the mornings, I then set my basal rate to mimic the MDI split. That seemed to work for me, although I have a couple of basal rates to take into account things like sleeping longer at weekends and DP, and exercise and non-exercise days, based on observations. On a normal day I have a day rate that runs from 5am to 9pm, This then steps down in a couple of steps to a night rate that runs from midnight to 3am.
My I:C ratios and correction factors have transferred over essentially one for one, so those didn't need any tinkering.
I had 12 hours with BG levels dropping too low thanks to the incorrect assumption from Pumping Insulin, but the rest of the time it's all worked really well.
How has your DSN moved your Basal from MDI to the pump
@bridkid_74 ?
EDIT: I'd also add that I read the approach of basing it all on TDD, then chose to ignore that, as the reality is that the way it works, you need to base a basal on something, and the TDD model seems to be slightly wrong to me, if you had an MDI basal that you knew was effective at keeping your glucose level flat.