Hey Taylor I am looking at fostering a 2-year-old female mix medium build just had a litter. My current dog is almost 11 and is a Boxer pit mix 60lbs gentle calm pup. The rescue is saying I should have the foster strictly contained inside her crate for a couple weeks and sleep inside the crate and be inside the crate for 4 hours. She will have her own room and no access with the resident pup. It was recommended I keep her on a leash while inside the house also but mostly keep inside the crate for the first couple weeks. Does this all sound good to you? I get it slow and easy let the new dog know its place and not get to overwhelmed. I will be nervous for sure when I am at work and she's alone for 4 hours in a crate 5 days a week. My hope is she will become comfortable enough to be out of the crate and with my resident pup at all times.