Triplets! How do you do raise them!??

I haven't had triplets, per se, but I like to space the children in such a way that there's "a year or two" between them. That means I age up the next baby to toddler so that the older one isn't more than 2-3 Sims days older. This has given me, in effect, three toddlers in the same household, at various levels of their development. It's crazy-insane, but it is doable. Remember the PAUSE button is your FRIEND. Generally, I have the Mom at home, while the father works. (Yes, I was born into the Era where this was the 'norm.) Sometimes, she earns a few Simoleons on the side, either selling her artwork, her garden harvest or writing books, so she's not merely sitting on her hands. I work on potty training, first. Unlike other iterations, this doesn't take all that long. Then I make sure the toddler(s) focus on the blocks. I also make sure they do the "What's that?" interaction with several objects. They play on the tablet, and with their toys. Feeding them, once I learned from others, is a breeze. Just have one Sims serve a meal and call others to meal. If the toddler doesn't come running, I direct the little tyke to grab a plate, which they can do, miraculously, even from the high kitchen counters. They can also manage to put a plate up on a mantel. Would that I had those kinds of powers. LOL I be short. If you can get their thinking skills up, they won't be so inclined to pitch a fit, so you can turn those little monsters into some nicer little not-quite-angels. Also, if there is room in your household, you can always consider creating a Sim in CAS to add to the family as a live-in Nanny. That way you can control their actions to your benefit. My Sims3 toddlers used the baby swings, a lot! We don't have swings, yet, which I do hope will be amended in the future.