Hi, we just got a white lab she is 9 weeks old. It’s been 10 years since I’ve had a puppy and need a little help in potty training. When I take her out she’s really good at peeing and pooping, and every time she does I give her a piece of a treat. But she still pees in the house. How do I train her to go sit by the door when she needs out? Thank you for any help you can give me!