Boyfriend (23m) bearly talks to me (21f) and away more distant

Recently me(21) and bf(m23) have been a bit distant with each other due to the fact that we are both working I’ve started a new job that has exams and we live far away and work far away from each other.

We’ve both accepted that we have drifted but we do want to work on it, agreed when he’s back to do a weekend away with each other and bring the spark back

when we first started dating he went on a trip (2 years ago) and couldn’t stop calling me to tell me he missed me he loved me etc, his friends started bullying him esp when he was drunk because he couldn’t stop telling me he loved me.

Second trip (a year after) he went he did not even call me once, I told him this upset me and I felt like he liked me so much more at the beginning,I ended up crying bc the shock of the difference really shook me.

Now on this trip that he’s one , it’s a 9 day trip 4 days have gone and he’s not called me other than the one phone call when he did but he was so drunk acting like a degenerate and I was in front of my friends and was embarrassed and hung up. He apologised twice for this. They’ve been hanging out with some girls , girlfriends of the people he went to see and maybe some single girls idk? My ex cheated on me and I can’t help but project this onto that. How am I supposed to navigate this.

I’m so upset and hurt i feel upset I know when he’s back in the mood I’m in I’m going to be this needy Whinny gf and be mad and cry. I’ve tried making the effort and he’s just getting comfortable