One team that's developing for multiple products. Do I create a separate product/sprints for each product, or combine all into one?

So I have a team of 9 developers who have been working on a site in a Scrumbut manner. Another site needs to be launched, so we now have 1 current site being maintained with bug-fixing and new features, while the other is being developed. Eg; 1 developer may be doing work for Site A for 30% of the time, and on Site B for 70% of the time.