Temporarily playing with 4

[Amesman]

Team A had just 8 players (underlevel tourney). Two players sub out in a FT situation. One is replaced by a lass with an earring. Partner recognizes before FTA so coach is informed she needs to come out.

As T, I ask player about to enter if she had just came out. Yes, she admits, so I invite her to resume sitting. Ultimately and reluctantly, the last player (keeping the book on the bench) goes in.

The question: If they had had just seven players, do we carry on with four until one can come back in after a clock stoppage? A quick flip of the book didn't get me the confirmation I was hoping to find.