How do I fight for us?

I posted a while ago about me and my guy taking a break. He said he wants to be alone. He then asked me to come over maybe a day or so later. He told me he loves me, that he feels like we’re stagnant and we need distance to help fix it plus he feels like he doesn’t have the time do dedicate to us as he would like. I’ve been chasing him for almost four years I’m tired of chasing him. I’m respecting his wishes and giving him space, but how do I fight for us during this distance? I love him so much and I want the success for our future like he says. I just feel like he’s slipping away. What do I do?

I should also add that we were together for 3 years with problems on and off.