He's a shitty Texter

So my boyfriend is a shitty texter. He always takes forever to reply or reads and never replies. He's a really sweet and amazing guy, in person. I know it should matter but it's gotten to where we text 5 times a day and it kinda pisses me off. I've tried bringing it up but like a haha thing but nothing has changed. I used to think it was just him but he will update his snaps and ignore me and stuff. Idk how to fix it