I have a rattie named Rufus, and my sister has a brother from his litter named Ron. However, she's moving and taking Ron with her, and my mom won't allow me to get another rat. I have no idea what to do, and I really don't want to have to give him away. I love him dearly, but I know I need to keep his health in mind. Would rat playdates a few times a week suffice until I can convince my mom to get another?