If 11 disciples can immerse 3000 in one day, certainly interview every one of them and get a credible profession is each case in not a problem, I would imagine.

3000/11 = 273, 24*60/273=5.3 min, so each potential candidate get 5.3 min, including waiting period for the disciple to see if their profession is credible+immersion time, certainly doable!

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Polo
Layman, Chinese Evangelical Church/Independent
San Diego

For from him and through him and to him are all things. To him be glory forever. (Romans 11:36)