Is he losing interest or just busy?

This guy I've been talking to, I've noticed since last week he has been distance, he hasn't talked much or initate too much conversation. He said he has exams which I understand. Whenever I post a snap story or Instagram story he sometimes would comment on the story. Before I asked him if he wanted to meet in a week or two last week and he said sure sounds good, then I wanted to confirm with him a few days ago and he said can I let you know by_____ ? He has been on an app we talk on. We talk on two apps and one of the apps you can see when the person is online and he sometimes is on it frequently.
Not interested
Interested but busy
Other (please explain)
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+1 y
We're friends who kind of flirt with each other, he has said things that made me think otherwise
Is he losing interest or just busy?
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