I have a different viewpoint to switching stances than most. I am right-handed but fought southpaw. While I completely understand the purpose of focusing on one side only, I equally trained both sides. Maybe not equally, but at least 70/30. During my fights I would switch stances and fight with my other side and it would completely throw my opponent off. After years of training both sides, I got to a point where I felt equally confident from both sides and switched frequently. That worked for me, but your training is all about what works for you and what your goals are.