Get up earlier, and layout on the roof for 10-20 minutes everyday if you have to. The reason I say get on the roof is because you may need to get up as high as possible to avoid trees and catch the sun at a low point before you leave for work. Also, go out side during your breaks at work, and take off shirt if you can find a spot. Every little bit Clint’s, and it will make a huge difference over time.