Wheelbuilding / Wheel Building / Wheel build help

currently squeezing parallel pairs of spokes after every round of tensioning

You only need to do it right once. The idea is to take any stresses at the outside of bend points past their yield point. Once they have been done once, there shouldn't be any more residual stress to relieve. Wait until your tension is at the final value, then stress relieve. You should find that all the spokes have lost a small amount of tension, in an ideal world all the same and the shape won't have changed, but finishing is the process of bringing everything back into line and evenly tensioned after the inevitable asymmetries of stress relief have manifested themselves 🙂