boyfriend doesn’t respond when out

the title says it. i (20F) have been with my long distance bf (20M) for over a year, but lately we’ve been having some communication issues. i’ve told him time and time again that communication in long distance is insanely important and i would appreciate if he would show me that he cares. yesterday, he asked me to call last night, he gave me a specific time and everything (midnight cause of the new year) and now he hasn’t texted me back in hours. i went to a fancy dinner last night so i wasn’t on my phone, but around 10 pm he double texted me “text me please” i think it is insanely hypocritical to send that then for him to quit responding. i trust him, but the thing that i have an issue with is the lack of communication considering i told him how important it is in the ldr. i mean, basically every time he’s out he doesn’t respond, which i completely understand him wanting to live in the moment, but i also voiced that sending a simple text at the end of the night, such as “we can talk tomorrow” or something takes nothing but a few seconds. i don’t appreciate the just cold turkey ghosting all night/morning long every single time though. i’m not trying to come off as nagging and annoying, but i am tired of him saying he’s gonna do something then not following through. is this valid or am i doing too much?