actually, as long as he/she has poo poo within a few days, then that's okay.
but you can also try to give your BB some water during the day. esp now the weather is so hot and so I think give BB some water is better to avoid dehydration plus help the poo poo not to become too hard.
My doctor told me sometimes the BB might not have poo poo in 5 days. but as long as the poo poo isn't too smelly, isn't black or white or red in colour, then that's fine.