How long to wait before making things official?

I have been talking to this guy for a few months now, he told me that he was not ready for a relationship right this instant but he would be open to it in the future.

We talk daily and see each other almost every day, but I am starting to feel like I’m going to be here forever, in limbo. How long would you wait before walking away?
How long to wait before making things official?
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