The phrase "less tantrums" means that there are fewer fits, outbursts, or angry behaviors.
Sentences with «less tantrums»
This allows you to have dinner at your regular time, creating less rushing for you and less tantrums for him. (askmoxie.org)
For parents this is good news because it not only promotes healthy development it also means less tantrums, less power struggles and less whining. (positiveparentingconnection.net)
But to make the claim that if only EBF would become the norm, our children would have less tantrums is unconvincing. (amotherinisrael.com)