I put this together a few years ago. It might help with I Need You 2 Survive
https://www.youtube.com/watch?v=X_ux0kmZSiA As for Fill Me Up. I just listened to it on YouTube. The majority of the song is a progression of D-->A-->Bb-->C
The first time that they repeat "Fill me up God" it's just cycling A-->Bb, then they go into D-->A-->Bb-->C.
When they get to "So love of God, Overflow. Permeate all my soul" the bass is cycling Bb-->F
Then it goes back to D-->A-->Bb-->C
Hope that helps.