How to cope with taking a break? Help!

I have been talking to this guy I met in November of last year (I am 19 he was 19 but recently turned 20) and we have acted like a couple for the first few months. Before school started he warned me that we need to slow down because we need to focus on our school work. And he’s right about it but now the time has come, and after a couple weeks in school mode, he has been very independent and not as excited to want to see me as I am to him. I feel a lot more romantically for him than he does for me so we decided to take a break. we talked about it and we both don’t plan on seeing anyone else and I trust him 100% but I don’t know how to focus on myself in the meantime. It’s been a couple of days since we have started the break and I don’t know how to cope... I want to message him all the time and I miss him a lot. I don’t plan on moving on, but I need help waiting for him?