what should I do ?

So I met my bf in June 20 , we didn’t talk long and just started dating , he went to Cali the next day after we made it official and his communication has been poor and he always wants to blame me for it. I’m being patient with him because I really like him if now I wouldn’t just start dating him after only a week of talking but I’m wondering if I should just see how things play out with us or should I just let him know his communication is poor and he should put in effort? Cause I’m done with his attitude he gives me on the phone and very close to just forgetting about him and just entertaining someone else .