When teaching any pressing motion, I tell my clients:
"Pull the bar to you." Instead of trying to lower the weight and then press it up, try to actively pull the weight down to you. Resisting gravity means slowing the bar down. Pulling it means tightening your back and biceps and shoulder, tightening your abs, and stabilizing your stance. That gives you a strong base for pressing it back up.
This works for any press - dumbbell or barbell bench press, overhead press, or even dips ("pull yourself down"). The more you pull it down with control, the tighter your base and the easier the press back up.
1 hour ago