Sorry, another probiotic question : how much time before abx should you take probiotics?

Apologies for so many questions about this, I never think of them all at the same time!

From my previous question, the probiotic should be taken 2 hours after antibiotics. In the morning my son sometimes sleeps fairly late, and then there isn't much time between breakfast and lunch. How much time should there be between probiotics and antibiotics?

If he could take one at bed time too, they'd have all night to establish and do their thing. No apologies are needed. :)