My baby slept during the interview last year. May be she had good performance in 1st and 2nd session. Even she miss the 3rd session, we got the offer at last (although not the 1st round offer)
By the way, I still took her to the interview room even she slept.
So don't give up..... if you really like the school.
yes, if have interview in the afternoon, will let him sleep late in the morning, if he is sleeping, will change his clothes white he was sleeping, take him to school directly, after several movement, mostly will wake up, if school ahve warm up area let him play for a while is fine