Big sister in training...advice?

Jaime • PCOS & IVF mama to a beautiful 2yo girl and a surprise miracle girl born 2/6/18!

Our sweet girl is about to be a big sister! I'll be 38 weeks tomorrow and I just want to make it as smooth as possible to transition her into this new role. Any moms with 2 under 2 that can offer some advice? She LOVES her dolls, constantly has me read her books about babies, likes to listen to baby sister with my doppler, and always lifts my shirt says "baby" and kisses my belly. We have a gift to give her once baby arrives, but I believe she is still too young to really have a conversation about baby coming home.