My kids are 3.5 and 16 months. The transition to 2 was really not that bad at all, and we hit a great groove around 6 months old, and just generally were enjoying having 2 kids. The past few months it seems like we're back to square one, the three year old is threenager-y and the 16 month old is now tantrum-ing / cranky all the time.

Wondering if there is a magical age we will hit where things will go back to being great again, or if it's just a constant up and down!