Crib to Toddler Bed

Montano • Mommy of 2 expecting a third by Halloween or early November. I got pregnant with my first at 17 had him in 2016 , had my daughter in 2017 having the next between Halloween and November of 2018
My son is going on 15 months. Is it too soon to put him in a toddler bed? He doesn't like his crib anymore . He fights his sleep to stay up with mommy and daddy then when we lay in our bed , he crawls in bed with us and goes straight to sleep. Also when he takes naps , he has to be in our bed . If we put him in his crib most of the time he wakes up.