Hi Y'all! I have an automatic door that is installed but I've been afraid to plug it in because my silkie insists on roosting in the doorway every night! If I install it, is it going to hurt him when it comes down? Will it just stop when it hits him and eventually close all the way when he moves? I just don't know how much force it uses when closing. Also, any ideas how to break this habit he has of sleeping in the doorway? Maybe a lower roost? Thanks!