So I need help processing this

I have an INFP(I think) boyfriend who is a bad texter. He hardly reads my messages, after he replies, poof disappears again. But I know he is loyal, busy sometimes, and always falls asleep the moment he reaches home at 8pm ish. And he wakes up right after noon. There was once I saw him not opening my ig messages, asked him, and he said he likes to leave unread to know that he is ‘wanted’ (or something like that).

I voiced it out to him once, or twice🤔, and he said he will text more, and always apologise for it. But he still does it, and apologise. But really I don’t need him to text me more, just text me before disappearing would be a good start. Like before going to bed, or going to a 7.5hours workout with friends. I would gladly enjoy my sitcom in peace.

But we’ve only been together recently, so I don’t know if this ‘annoyance’ is feel is valid and rational. I don’t know whether I should be more understanding, or is there a valid point I can point out to him. I don’t know how to explain to him.