I know that phase 1 allows tomato juice but there seems to be a lot of sugar in it. How is this ok for phase 1? I know the sugar isn't added and it is from the tomatoes but it seems like too much. Can anyone shed some light for me?

Sugar in tomato juice is purely from the tomatoes (assuming you don't see sugar listed in the ingredients). So yes it is allowed in phase 1. If sodium is an issue, go with a low sodium version.