Is his ‘don’t worry about me’ message a goodbye or just needing space?

A guy has been silent for 3 weeks after saying he’s not doing well. I have messages many times asking if he’s okay or if he doesn't feel like talking let me know and I won’t message I don’t fade or ghost so just be honest
He finally replied 3 weeks later saying he’s okay but not doing well and said don’t worry about me. He said it’s probably best for you to not worry or message just enjoy your summer holidays only a few days left.

just wondering how I should interpret his message he’s said he’s not doing well before and not to worry. I’m wondering if this is a final goodbye or he needs space should I check in after a while?

Is his ‘don’t worry about me’ message a goodbye or just needing space?
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