We're trialling this at the moment.

DD2 has currently been there for close to an hour. I feel this is too long but DP instigated it and won't let me end it.

He got his methods from the one and only Jo Frost

Does the time start from quietness? Or can they carry on and be let go after the time.

Should I intervene and make her apologise for her behaviour or let it continue until she's quiet for the 5 minutes.

I'm about to lose my $hit!!!