My boyfriend is to busy and keeps rescheduling on me over and over. Should I be worried?

My boyfriend is very busy. He has Uni, work, and a sick Grandma. We get one or two days a week to see each other. But he has been canceling a fair bit lately. Once cause of he's Grandma, two workmate had an injury three tired from work and had a bad day four, he had a chest infection and a bad cough.

I have not seen him in a while cause of all this and a bit worried about things. We are gonna chat about it next time I see him. Think this all sounds genuine? Any tips on how to bring things up without scaring him off?
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He knows that I wanna talk about things and has let me know that we will catch up some time this week for a chat once he is better.
My boyfriend is to busy and keeps rescheduling on me over and over. Should I be worried?
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