I don't know if this has been reported yet, but I experimented & found the fillmotive command for toddlers' attention need:
fillmotive motive_toddler_attention
I'd had one of those buggy gameplay sessions, where the sims just stood around & wouldn't follow commands (& had dinner plates stuck to their hands, etc.), & the 3 toddlers in the family, who would've been fine if the adults had just DONE what I'd told them to do instead of standing around contemplating life, the universe, & everything, were mizzzzzzzzzzzzzerable...so I decided to cheat them to where they should've been. The wording for the attention motive wasn't quite the same as everything else, so I thought I'd report it, so it can get into your guide at some point.
Thanks for your site & your guides, & happy simming!
edited for annoying typo!