Does no contact rule works if you're the one who break things up?

If you're the one who demands that the two of you should cut contact because you notice the other person acting uninterested and distant, you've tried to ask them if there's something wrong, but they deny it. However, you know something is definitely wrong because they have been acting differently than they used to. Can you still contact them after some days to see if they have had a change of heart or something? Will the no-contact tactic work if you're the one who initiated the breakup?

Does no contact rule works if you're the one who break things up?
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