Why does my son wear winter clothes in the summer and summer clothes in the winter?

I’m sorry this is so long after our last conversation! I got so caught up in all my research and with my FB groups that I almost forgot about this forum! I wonder constantly what he thinks about. It sound like you didn’t lose too much (or maybe nothing) cognitively. My son was cognitively impaired before his first episode. I know this now from reading things and in looking back, I do remember he had flat affect before. Do you take an antipsychotic? Probably a stupid question. My son is on the invega sustenna monthly shot. But he doesn’t talk much, and when he does it’s in response to yes or no questions. Sometimes the answer is “nothing,” or “listening to music.” How can I get him to open up, tell me a little bit about what he thinks . . .I mean, I need a specific question LOL! Also, I know schizophrenia is a thought disorder as opposed to a mood disorder. Something I’m confused about, though. Is the thought “disorder” always present, even when AP meds? It does seem like he has some disorganized thinking.