As well as centring the side-stick between inputs, the thing to realise is how the FBW will assist you; (it never "fights" you, despite what some might say).
In a turbulent approach with say a wing drop, you will sometimes need to hold full opposite side-stick for a couple of moments to pick it up. Meanwhile the FBW will be doing the same. You have 25°, the FBW has 15°, so between you and the FBW, you have the 40° roll demand*.
The crucial thing to do is: As soon as the wing starts picking up, bring the side-stick back to neutral - to reach side-stick centre neutral at the same moment the aircraft reaches zero bank. If you hold the side-stick over until you have zero bank, you will bank too far the opposite way and get into a PIO.
*Please note the figures I give here are from memory - no time to check, but it is the principle that is important.