It's a little more complicated than people think. Breakups due to lack of communication receive little attention on analysis because people seem to think that "he/she isn't messaging me everyday must mean he/she doesn't care". I am 26 and in my first ever relationship (shocking, I know). It's his second, so I assumed he would know the "do's and dont's" of relationship.
Turns out, not so much. His schedule is way busier than mine and it's affecting his personality. His over-jolliness is getting lost amongst the heap of homework, tests and presentations. I haven't seen him for 10 days or heard from him for 2 days in messenger/WhatsApp. He sleeps and studies all day and silenced his social media to not to distract him and that means he won't even talk to me. I often send little messages to make sure he gets to talk and vent out because it's healthier.
I am a little bummed, I admit because I have more free time, but I don't want to be the bitch who comes between education and a student. I've been there where I blocked all my family and friends when I was working/studying, so I understand. Also, I am older and senior than him (he's bachelors, I am doing my masters) so I should be a little more understanding because, even though relationship-wise I am inexperienced, I am more experienced with how real-life works. If it was the other way around, I would expect the same from him.
So, 10th day without seeing him and 3rd day without any messages. But it's okay. I want him to graduate with good grades and I want to be proud of him for his progress and achievements. I hope he gets the grades he is studying so hard for. I'll just be there when he needs a good cup of coffee.