Two homes

My dad just passed away. I need to keep a close eye on his house when I’m not staying there. I already have a Ring plan for my own house and was about to add additional cameras to that plan. Please tell me there’s a way to add an additional camera under this plan at a remote property I own. I really can’t afford to create a new account / subscription. If that’s not possible I think I may ditch this approach and look for alternative non Ring systems with onboard storage instead. I’m fed up with so many inflexible subscriptions. Just not sure what alternatives might be. Or at least, maybe a plan that allowed working across two properties.