Boyfriend does not care about me as much

When we first started dating we would have a constant convo through the day, obviously when we were busy we’d reply hours later but during the day there would be an ongoing convo even if it was just random dumb stuff.
A year and a half later and especially during quarantine he takes hours to reply and when he does it’s just a response to what i asked or said... and he doesn’t continue it. I don’t mind when he’s not at work but now he’s just like ... you’re not even doing anything? He just bought a PS4 but wouldn’t you reply to my texts when your done?

For example i’ll tell him something useful and he will just reply ‘thank you xx’, so i’ll say smth else or ask what he’s doing and he’ll say thank you and i’m playing ps4.... then go offline for 2 hours until i text him again.
If he replies at 5pm , reply at 5:01 but he won’t read it or look at my response til 6. I just feel like he doesn’t care to keep the conversation going. It’s always just him replying to me and me feeling ignored and boring to him.

I’ve spoken to him about this 3 times. He says he’ll try but 3 days later he’s doing the same thing. Tbh i feel super annoying constantly nagging him to reply when usually he was the one obsessed with me. I used to get princess treatment and now i feel like as i’ve began to love him deeper he’s caring less. He also sometimes sleeps on facetime when i’m talking and says he’s tired... (this has happened 6 times in 1.5 years).

What do i do? I’ve sent him a message saying i’m leaving him alone now as i’ve mentioned how much i hate when he just reply ‘ah cool’ and goes offline for 2 hours. So is that the best thing to do?

Really, I would say talk to him about it. But I see you already have 3 times. Which should be more than enough. If you want to act on it, it should be more authoritative than just talking to him about it now. He might be busy, but it depends on what he's really doing. If he's just playing PS4, it could cause him to not reply for a little while because we guys can get quite tranced into a good game. But if it's all the time, even when he knows you're trying to talk to him he should be taking a lot more care to talk to you. I know one of my friends always goes offline, even when he doesn't want to, to talk with his girlfriend for a few hours every night over the past few weeks. Every guy is different, but really he should be caring more than the way he is showing now. If you do want to take some action on it, you should either learn to live with it and accept this or seriously discuss the relationship with him. If he isn't willing to change after several talks to simply give you some attention, which should be expected by guys when entering a relationship (to give the girl attention), then there is a pretty big problem. This thread is watched for me now so I should see new posts and replies you make.