OK i see, so my suggestion would be to cut back so things settle down a bit but
continue at a lower dose so that you get gradual improvement without upsetting your digestion. Clearing out your sinuses seems like a good thing. The Acne may be reduced if you cut down and you could also try topical applicaton for this but make sure you know how to preprare it right. There are instructions on humbles sites and here somewhere if you put it in search
I also take vitamins and minerals separate to the mms and there are herbs you can get to help skin problems. Ginger or fennel or another digestive herb may help with the digestion and wind. I'm sure you'll get other suggestions