Id give him a least a week to cure when you do 1st polish don't get to carried away as the paint will shrink back after a few weeks what i do is do a bit of a light sand then a quick polish and when its full cure i repolish it as the paint gets hard and you get a better shine, becareful putting it in direct sunlight if its to warm it can blister it, have had it happen a few times to me but nice job so far don't rush it