Hello. Recently (1 week ago) had my kitchen painted in a semi gloss finish using Sherwin Williams Duration (Acrylic Latex) and have found it to be much too shiny. I am looking to tone it down a bit by going over it with a couple more coats of the same color in a satin finish. Ive read and had a couple people advise me to lightly sand the existing walls before repainting but Ive also been told that the acrylic latex will adhere just fine to the semi gloss and not to worry about it. Also given that its only 7 days cured while it takes up to say 30 days to reach full hardness, sanding may not be necessary. I am obviously looking to avoid doing unncessary work but I also want a good job and not have to worry about peeling or the previous sheen showing through somehow. What would you do?