Boyfriend is busy and we barely talked all today

When my bf gets super busy or stressed he doesn’t talk to me, he’ll ask me to edit or read his stuff or make small talk like did you eat but he doesn’t give me the attention I give him when I’m busy. I make an effort to talk to him as much as I can and never make him feel left out. Idk what’s up today that he is too busy to text me back regularly? I e talked to him about this before and he always says he’ll be a little better about it but I’m getting frustrated. But then he says I’m too clingy but he doesnt get it because I never not text him.