One thing that you need not schedule in your fitness program is the rest breaks you take when you are working out. It can be tempting to tell yourself you must rest for ten minutes after a half-hour of exercise. In fact, it is better to listen to your body and take breaks when you feel you need them.
If you want to make your weightlifting routine faster, without sacrificing any fitness benefits, build a routine that does not require any weight changes. Start with the heaviest weight that you can manage, for your weakest exercise. Adjust the reps and sets of your other exercises, so that they can provide a decent workout with this same amount of weight.