It's incredibly hard transitioning from one pump to another and the differences are more apparent when faced with more obstacles, just to start off why are changing your set at 3.30am is it because you've gone high and alarms ? What cannula sets are you using ?
Getting used to something does take time and patience, as t1d's we want instant relief but a new pump will bring new challenges, it took me a while to get used to my T Slim, I use trusteel sets as didn't get on with the mios/teflon sets, had many fails but I don't with trusteel as I manually insert the steel tip, a set can last me 3 days, yes the change is fiddly but with time/practice it does get easier, the benefits though with T Slim are great, more stability, better sleep quality, these far out weigh the negatives but that's only happened over time.