My butt yet to start shrinking either, but my feet have melted down to a normal foot size, my pants went down 2 waist sizes, and my face has melted away so it is a glowing 1 chin face....my heart and liver and kidneys i'm sure are rejoycing due to their loss of fats around them....
Always check out the positives....fat is lost around your heart, liver , and kidneys first because they are the ones who are taxed the most from our weight issues, this allows us to get more energy and be healthier so our bodies can exercise with less trouble.
Your/my butts will come soon enough give it time, give it time...we didn't make these butts over night!