Not sure what to think?

This guy I texted for a couple months. We finally met a few times and he was super nice. After a while he would start to be distance, and I would wonder what is going on. I was confused. Then finally, 1 day I didn't hear from him for a couple days, he called me and he told me everything that he was experiencing. An issue with alcohol that it's never been like this, but he has been drinking for 3 months now daily, sometimes a 6-pack. S so he was telling me that he needs to quit and what his plan was. He was going to the doctor for medication. He made an appointment at the gym with the fitness person to start exercising, to try to get in the healthy frame of mind and physically, and he called me his girlfriend. The last time we talked was the day before yesterday and said he was gonna call me back and I haven't heard from him since. I'm confused. I don't know what he may be experiencing. Maybe it's because he told me he loved me and I didn't say it back. I dont feel we're there yet. Especially now. I'm not sure what is going on if I should be concerned or just leave him be. He doesn't have family that lives in state. If anyone has some insight on if he could be experiencing something mentally concerning id appreciate it. I called him but he didn't call back the day before. I left it alone for a day. This morning I called and left a voice note telling him I was checking to see how he's doing and hope everything is going good for him and I've included him in my prayers. I told him sometimes I fo feel like telling him I love him but I hold back. Its because we haven't got to spend a lot of time together. I told him I hope he has a good day and ill talk to him later. He hadn't opened it all day yet. Im ok with it im more concerned than anything right now. Thinking possibly he's experiencing different emotions heightened? Im not sure what someone goes through with quitting or trying. Its possible he has not too I guess. Well I let him know i care and am thinking about him.

Not sure what to think?
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