They each have their own crates, right next to each other. F is 2 y/o, M is 8 months. They get along really well, and they recently started sleeping at night together in the same crate. Should I allow this or stop it? They are both peacefully in there, snuggling and snoring. Also, today was kind of a stressful day for them bc they were alone longer than usual. Is this them coping with that? Interested in your experiences, thank you