Being one step too late just depends on how fast you are compared to the enemy and what kind of level of shots you guys are playing so I can’t help you with that in the technical sense because simply I don’t have enough info. Be on the balls of your feet when you are about to move and always step on the heel of you feet FIRST then the toes when u land to do a front court shot. pay attention to your left foot, it should be pushing off and then slowly retracting with your right foot to wherever you go (it will lag a bit behind) and always walk back towards the middle, NOT TO THE MIDDLE, just walk TOWARDS it. The only you are gonna improve is by having a coach watch you do shadow-stepping all day everyday. There is no shortcut.