@Confused22 Unfortunately, it can definitely happen that way, and not just with schizophrenia but with other serious mental illnesses as well. First I would say don’t take it personally and I wouldn’t attempt to predict how long this silence will last. . Chances are whatever is going on in his head is so consuming for him at this time that he has had to just mentally set you aside for now, probably not intentionally.
If you are serious about continuing your relationship with this person, I would read all you can on his condition, arm yourself with knowledge. Relationships (in general) are challenging even without mental illness as a factor, but more so when it is a part of the picture.
You mentioned he is newly diagnosed and only recently began medication. He is at the beginning of a long road to recovery. It takes time to adjust and readjust meds and sometimes meds have to change and then once they are correct it can take up to a year or more to achieve solid stability. It is a difficult process and he probably could use positive support and may not have a clue how to ask for it.
Stress is a negative trigger and can create instability for a schizophrenic.
What is “stressful” greatly varies from person to person. Stress is not always from a bad source. It might be a combination of several things (and maybe has nothing to do with you at all)
I hope your friend is getting good treatment and taking it seriously and that you and he can find a way to make a good relationship with each other if that is what you both want, it can happen, it takes work, patience and understanding.
As for breaking his “silence” I would write him a letter and mail it to him (snail mail) if you can. Simply worded and upbeat explaining how you feel and maybe seeing if a future visit is possible. That is a good start. (or “restart”)
Something about a letter I find works better because if they don’t or can’t read it right away for whatever reason-- it is there present with them to see again–a reminder, a tangible thing, Hopefully if you get a positive and supportive message to him he will contact you again and you can take it from there.
Wishing you (and he) all the luck in the world! Here is a good resource for learning more about his condition.