When to ask?

Erin • Mama to 3 beautiful girls
With my first I never asked to have skin to skin contact RIGHT after my daughter was born.. And she ended up having her cord wrapped around her neck and was silent when she came out.. So they took her to a table right away. 
But with this one I really want skin to skin contact right after she is born. (As long as there is no complications) 
So my question is, when do I ask the nurses for that? Do I say something when I get to the hospital? Before I start pushing? I feel like if I say something when I get there.. There could be change in nurses or they could forget by the time I start pushing.