| Hello Jay and welcome to the forum!
I wouldn't think you need to do anything to further control the amount of light you get. In your east window you'll be able to bloom pretty much anything (Cattleyas, Phals, Paphs, Oncidiums, Vandas, Coelogyne, Phrags, and all of their relatives). In my opinion you don't need supplimental lighting or shades.
What are you growing? How long have you been growing this way? Have your plants been growing and blooming?
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