For this kind of learn, best to use helgoboss realearn's imo
https://forum.cockos.com/showthread....light=realearn
Natively you can't go midi control path cause you'll have to learn each time you change the mapping.
Midi input path could do it, if the plug-ins are on separate tracks, you can change the routing of a midi controller dedicated input track. But then the learned controls can't be moved with the mouse anymore wich is not nice.
Realearn allows you to change mapping just by bypassing an fx or switching preset. And if your controller support it it can send midi feedback wich makes things is so damn easy and responsive.
There's another nice solution with lb0's smartknob script too.