He has given you his support and what he's capable of giving at this current time.
He is not a qualified therapist. Perhaps he is going through issues and tribulations of his own, and is trying to take care of and protect his own mental health and well being. Also, you don't know how and what's effecting his psyche.
No one likes to be trauma dumped on.
You are probably negatively effecting his mental health and well being. Respectfully, he doesn't want to hear about this often, especially if he really cares and he knows there isn't anything he can do to ease or make everything better.
He could be feeling unappreciated and disrespected as well too.
You don't appreciate the support that he's been giving you. You have minimized and devalued the support that he's been giving you because you have a higher expectation and standard of him then he can meet.
You have an unrealistic expectation that he can be there for you 24/7...that his life should be centered and focused around yours, that he should feel depressed and perhaps spiral into depression with you, because you feel these ways.
He isn't pretending that these things aren't occurring in your life.
He has taken the time to spend time with you.. he has taken the time to keep in touch and communicate with you fairly often, he has let you vent to him constantly, he has wished you well, etc....
These things are showing support. His support is not enough for you.
He can't be your only/ primary outlet.
If you don't feel that he is the partner that you need. End things.
Respectfully, perhaps therapy, hobbies, friends, other outlets in life would be beneficial for you. It's unhealthy to center your life currently on him, his lack of response, checking your phone constantly, etc...
Perhaps he is busy, overwhelmed, needing space, and trying to protect and manage his overall well being.
Space is needed. Respectfully, find a qualified therapist.
I wish all involved well being, peace, and prosperity.