Not a specific scenario here...

It's been said before that in order to not get too invested in a single girl and get oneitis that you should focus on yourself, meet and date other people and match the girl's energy.

So let's say you've been dating a girl and you've been feeling yourself getting too involved. How do you guys go about pulling back without flat out ghosting the other person if things have been going well and you just wanna dial back a bit without seeming suddenly rude after you've given plenty of interest.