Myself, well, I'm a different story. This is how I personally adjust to each placement:
Week 1 : CRYING.When I see the child for the first time, my heart overflows with love, compassion and a sudden need to protect them. This was especially the case with baby J, because I met him on day 4 of his little life, and in the NICU no less. As I learn about his story and why he came into care, my heart can barely take it. I cry at night, I cry when I'm feeding him, I cry when I talk to people about him. It's uncontrollable.
Week 2 : Don't forget the baby!
We've never actually forgotten a foster child anywhere, but there is that strange moment of "wait, we need to bring more stuff with us, right? Ok, diapers, bottles, wow. We have a baby again!". It's very different from waiting 9 months for a baby's arrival. With fostering, you literally have hours to prepare yourself for the new placement and it's hard to wrap your mind around it. Once baby J came home to us, I had to make so many mental notes to take care of him and not forget anything! Dan and I hear him crying at night and say "baby's crying.... OH, THE baby is crying! We've got to feed him!".
Week 3 : A new normal.
The diaper bag is constantly updated and re-stocked. I know baby J's cries, his schedules and his needs. I feel comfortable feeding him while breaking up a fight between my older two. It's all normal stuff to us now and we're back to regular life activities. Week 3 feels so so good!!