It is difficult to dry acetone, because it is in slow equilibrium with diacetone alcohol and water (aldol reaction of acetone with itself), so many drying agents drive the equilibrium towards diacetone alcohol (4-hydroxy-4-methyl-2-pentanone) by removing the water that forms during the reaction. You would be best served to obtain the purest acetone that you can first, then dry it quickly with sodium sulfate and filter to use.
That is why no one sells "anhydrous" acetone. The best you can get is about 0.5% water, maybe 0.1%, but that is tough to do. Fortunately, in many reactions, a trace of water is acceptable.