If you brought your baby, would you be willing to pay for (through a wage decrease) a third of the nanny share? This may be appealing for some people, though honestly, it is not the situation I would choose for my baby. Newborns are a lot of work and very demanding. Taking care of 3 babies is a big workload, and one that always requires prioritizing. I would be worried that you wouldn't be able to overcome your natural instinct to care for your baby first. And with three infants, the chance that 2 are crying at the same time is high.