Chelsea, IMO it doesn't matter at all what breed of dog you have - most puppies mouth. Simple. It is very normal behaviour.
I for one would not expect my kids at that age to take on the control of teaching the dog not to mouth. That is the responsibility of you and your partner.
There are various ways to curb mouthing - many actually, and I think there are loads of threads here about how to stop puppies mouthing/jumping up etc.
Having a puppy is like having another baby, IF you want the puppy to turn into a well-balanced and well-behaved/well-trained member of the family.
It is all about what you put in.
Various well-known methods of stopping mouthing include the use of spray water bottles, clamping down on the puppy's mouth, offering treats and training at moment of instigated mouthing, look the list goes on and on.
Choose the method that makes sense to you and one that you CAN monitor 24/7 and implement.