Start a fun routine, kids thrive on a predictable routine, and so create one that will help yours get ready for school. The night before, help him pack his big bag with all the essentials. Let him choose his outfit for the next day; or if uniforms are required, let him set it out. In the mourning, you can let him put his snacks in his bag. Have a routine for before he leaves school as well. It can be as simple goodbye kiss and a “See you later, alligator!” or more elaborate goodbye to all his favorite things at home.
In school, he will be active and in play, so make powdering before school and play also a part of the routine. Powder absorbs sweat, and by putting powder before he even starts to be active, you can free him from that annoying sticky-sweaty feeling, cooling powder give that cool and fresh feeling.