My timing is much better.
Pui Ching is 10:30 pm while GH is 5:00 pm.
We can go home for lunch and then take nap before going to GH.
Anyway, last week, I also experienced the same as you. I woke my gal up at 6:30 am and then got her sleep at say, 9:30 and started the early lunch before going for interview. It worked as my gal did not get any sleep till nite at 10:15 pm.
You can try best to rearrange the lunch & nap time ..... good luck !!
oh I have 3 interviews on that day. 9 for diamond hill ling liang, 12 at Pui Ching and 5:30 for Good hope. If she doesn't feel good after Diamond hill, I may give up Pui Ching...