expecting too much?

Okay, so this guy am I have hung put a few times,  we like each other. Problem is, making time seems to be a hassel. We are both in school and I work weekends and he works nights til early morning during the week. We planned for me to go see him at his place yesterday,  and I understood why he couldn't because he had things to do. He said he would take me to lunch today to make up for yesterday,  and  he says he's tired. ...which I'm hoping isnt a sign that he will flake on me, again. Thoughts and comments needed please