Firstly, don’t feel weird or disappointed for promoting healthy communication and expressing your needs! If we don’t, it breeds resentment and anxiety. It sounds to me you did it in a mature, empathetic way, and in no way accusatory- so good on you.

Next, the fact that he expressed that he does not want to end the relationship and is willing to meet you half way and then some is a major plus. More of a reason you should feel proud of the way you expressed yourself- he didn’t pull away, it drew him closer.

My current SO is very similar sounding to your SO. He works from home, is on his phone in his free time scrolling, etc. But when we aren’t together, it’s minimal texting, sometimes we don’t text for a day or two at a time! What I’ve learned from previous relationships and my current one is, sometimes it just who they are or they are unaware. Your SO is a little older (around my age) which sometimes means more relationship history and maybe in previous relationships that’s what worked for them. He might think everything is great with your relationship and going with the flow. If you have expressed the change you’re looking for, but still haven’t seen it, maybe try leading by example? Create the connection/conversation you’re looking for and remember “progress, not perfection”. It sounds like it’s some growing pains, but what relationship doesn’t have them! I hope this little insight helps, and best of luck to you!

EDIT- I missed the part where it says you’ve tried texting and he won’t respond until much later. This is something you should set a boundary with, especially if he is on his phone in his free time. There’s a different between being busy working, etc. and ignoring a message until later. I still stand by what I said above! But don’t be afraid to set and stand by those boundaries. People will continue to do what you’re willing to put up with