i start my game 2 days ago, but until now my mother villager still caring for thier baby, the details for nursing baby still 120 minutes(NEVER CHANGE). The nursing time should be reduce from time to time, right?

i found this problem in the 1st day, so i choose next female villager to breed, now i sure both is the same.

May i sure what's the reason? How to solve this problem? Nursing mothers devote all of their time to caring for their baby, i need more villager to do other work in the village.

*.* (I choose x2 speed for game speed in game option. )

please, share me your experience...