https://www.amazon.com/Super-Lube-92003-Lubricating-Translucent/dp/B0081JE0OO
What you need is Lubricating Grease with PTFE.
This is what is specified in the BOM
The WD-40 you have dries quickly and is more for corrosion resistance.
I use Super Lube on my Prusa bearings.