I once was a mom of #2under2. That had it's many challenges. It's like having 2 babies, but babies who have different needs and are in two totally different developmental stages. In that first 6 months of having two under two, we all cried every single day. Then once my little one turned 1, it started to get easier and every day after that got easier and easier.
My kids are now 2 and 3 and they are BFFs, except when they are not.