Hello
@Emck
It's perfectly normal to feel this like, you've just made a major switch so are essentially out of your comfort zone right now and not seeing good numbers is just going to make that feeling worse, in my opinion people need support right now more than ever when managing this change, it's difficult ever visualising good control when in this moment of transition, but and this is where you need to dig very deep and have faith.
Early days are disruption, it's a period of change, you need to adjust and really put the work in, the reward is a life that's not controlled by t1, I am also a tandem slim user and believe it's the best pump out there, my life is not governed by t1, I run 2-3 times a week, manage 2 businesses, am a mum, and my life is non stop, if I were ever to go back to mdi then that would all change, i'd have to manage night time hypos again, instability with levels, extra effort required to micro manage my control again, this pump does all this work for me, my anxiety levels would be back through the roof too, that was me before I started on the Medtronic 640g and since then things have just improved no end.
Try the sure t sets - I couldn't cope with the autosoft teflon sets, too many kinked/failed and caused me sore spots so went onto steel tip sets, not had an issue since.
Stick with it, it is worth it, you have the best pump system out there and once the work is done tweaking and getting the set change sorted it will change your life.