Toddler not handling new sibling

Alea • 💙Baby boy born March 2018 : Baby girl born September 2019 💜

We brought my daughter home a couple days ago and my son is not handling it well at all. It has been almost constant screaming and crying since we came home. I know it’s a huge adjustment and we have tried making sure he gets one on one time, talking to him, and all sorts of things. But all he does is scream and throw tantrums during these times (from 6am -7pm) my sanity is dwindling especially with the lack of sleep from the baby.