There is not anything you can do except make sure she has a good nights sleep, is fed and not stressed. If she is an active child some exercise before hand might be good. I wouldn't base anything on your comparison with your older child though. Statistically she is probably within 10 points (assuming a full sibling) but you can't know until you test.

Last edited by puffin; 04/05/16 12:30 PM.