How long should I wait to unfollow someone if they didn’t follow me back on Instagram?

So I followed this guy I like on Instagram cuz I found him cute. Good news is he accepted my follow request. Bad news is that he did not follow me back and it’s been around two days. How much longer should I wait to unfollow him if he still doesn’t follow me back?
How long should I wait to unfollow someone if they didn’t follow me back on Instagram?
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