Do you ever take time to respond to text messages to show a person you're busy?

Some people say not to respond right away and give some time before responding so you look busy or not needy.
How long does it take for you to respond to your crush or someone else?

I usually take some times because I'm either busy or dont want to seem like im not.
Do you ever take time to respond to text messages to show a person you're busy?
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