How to Deal With a Shy Guy with Mental Illness?

OK so I matched with a coworker on Tinder a while back. We were talking on there, and eventually switched over to texting. Sometimes he does this thing where he disappears for a couple of days and won’t say anything to me at all. And then he’ll reply back days later, and say he wasn’t trying to ignore me or ghost me and it’s nothing against me. He does have some mental illness and does suffer from severe anxiety and stays in his head a lot. I’m not sure how to deal with this or what to do so that’s why I’m asking you all.
How to Deal With a Shy Guy with Mental Illness?
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