I just need some advice…

Hi. I’m in a little situation and could just use a little advice on what to say/ do next. For some context, I have a boyfriend who lives in a different state from where I live. He’s a year older than I am and he officially asked me to be his girlfriend a little over a month ago. We are very close to hitting our 2 month mark. We did talk for around a solid 3 months before he ended up asking me though. Just around a few weeks ago… gosh idk I would say maybe about 3-5 weeks ago he started acting differently. I began to notice things when our super bff mark next to his Snapchat bit emoji went away. I know for a fact he is the one I snap the most so it couldn’t have possibly left because of me. This obviously sparked my attention and so I would casually look on the snap map to see how long ago he was on to see if potentially he could be ignoring me. I did notice that he would be on for a moment and get off without snapping me back. I then started to keep track of his snap score because my trust issues are very much present in my life sadly. I happened to notice that his snap score would make a pretty good mark before he would snap me. (It raised up maybe by 30 before he would snap me back.) He wrestles though so I kinda just told myself that he was probably just talking to his buddy’s and logging off right away so maybe he would just forget to snap me. I ended up pushing away the factor though it is still happening. Actually let me check right now. It says he’s left me on delivered for 31 minutes and he was on 2 minutes ago. -_- Anywayssss. I ended up sending him a Christmas present which I told him was coming and it arrived about 5 days before Christmas. He still hasn’t opened it… There’s also other little things he has been doing differently like he hasn’t been saying good night or good morning to me. If I say it to him then sure he will say it back but he’s always snapping me last and first because he is an hour ahead of me. I will also use his nickname when I say good morning and he won’t use mine that he says to me. I’ve stopped using his nickname because I feel like I’m embarrassing myself. Before you ask… I have tried to talk to him. I asked him if he was okay and that he could tell me anything that may be bothering him. He just said that everything was fine and that he has just been busy. Idk there’s other things that he has said at the beginning of our relationship like how he was never going to let go of me and what not and… I feel like I know him well enough that he’s definitely not cheating on me but maybe just losing interest… idk what I’m doing wrong. He was also the one that has always wanted a long distance relationship it was actually me that was ify on the idea. I just am at a lost for what I do. Please any advice on what to do will help. I still care for him I really do but if I need to tell him something I may not want to I will be willing to. I’m just not good at relationship advice. I’ll do my best to answer any questions that may help.