WIBTA if I told my best friend he needs too do a better job responding too my texts?

Lately my bestfriend has hardly been responding too my texts at all. In the last few weeks it’s been very rare for him too respond at all within a day. A couple of days ago I asked him if he wanted too do something and he said sure when then I told him I can hang whenever works for him then he took an entire day too respond back and say sorry i haven’t been responding all day I’ve been with my dad. Which is completely understandable too not respond for that long because your busy every once in a while but no it’s everytime I text him or try too plan something he takes a day too respond then I get back right away then it takes him another day sometimes two too get back making it nearly impossible too plan stuff with him. It’s not only when I’m trying too make pans when I text him about litteraly anything else I usually don’t get a response at all It’s starting too not feel as much like a friendship anymore and more like me constantly waiting for a response I’m gonna very briefly get or not get at all. He used too reach out first about lots of different things and initiate plans but he just doesn’t anymore it just doesn’t feel normal too either get a very late and brief response with no follow up or no response at all from one of your very closest friends. Would It be a dick move of me too call him out on how little he’s been responding because I can admit it’s been very frustrating too me but I don’t Want it too hurt him at all if I express that.