Most Helpful Guy
I think you both need to talk about the issue you have with his lack of texting face-to-face. This maybe doesn't seem a big deal to him since he maybe delays his texts very often and to more people than just you, but if you show him gently that this is an issue, maybe he is willing to take care about this issue and try to text you more often.
Most Helpful Girl
If a guy wants to be with you, he will pursue you. You don't need to talk every day... I get it can be frustrating because you are excited to talk to him and build a relationship but all things happen in time. Stop being clinged to your phone and focus on you. He will come around when if he is interested when he notices you stopped pursuing him. That doesn't mean stop completely but just tone it down. Stay interested but cool.