How long should I wait before canceling a friend request that I sent him on Instagram?

I really like this guy, he seemed interested at first but I don’t know he just keeps giving me mixed signals, but now we don’t see each other as often
so I just wanted to send him a friend request and get it over with
so I won’t regret anything later , I hope.
how Long should I wait that I won’t seem too desperate?
How long should I wait before canceling a friend request that I sent him on Instagram?
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