Deacon
He is extending his front arm too much too soon which will cause him to develop bad hitting habits. We call these hitters "sweeper swingers". Arms should not be this extended which I believe can be attributed to the bat he is swinging which is obviously too heavy for him at this age.
Get him a lighter bat and work on maintaining angles in arms by pulling hands and wrists along with handle of bat in close to his body when coming forward. This will help Adian stay inside of baseball as hitter. Have Adian also lead out with lowerbody and keep bat back until his frontside is in hitting position. Good instructors call this, "HITTING AGAINST A FIRM/RIGID FRONTSIDE". Key to Success, IMHO.
Hope this helps out

Peace, Shep
PS(In the book, "Prophet of the Sandlots" you will gain valuable inforamation and I highly recommend this book for anyone serious about baseball and hitting. The lowerbody constitutes more than most realize in baseball related movements whether it be hitting OR throwing. The foundation of the strongest muscles in the body is impirical in the unlocking mechanism of the "Total Swing". Peace, Shep