18 mo sleep regression

Me

Please help. Our son is refusing to sleep and it’s wearing on us. I am not a person who emotionally does well on low amounts of sleep. I know (or maybe hope) it won’t last forever, but please help us through this. Our son used to sleep 7-6 and now he won’t go down and he won’t stay down when he does fall asleep. I got more sleep when he was a newborn than I’m getting now.