>>> For the exercises that can be weighted, try to add a little weight every workout or so. Keep the rep ranges low (5 for deadlifts, <12 for flys, and <15 for rows). Work on strength. High reps with 2 lb dumbells won't do anything useful. You'll get tired, but not strong. Don't waste your time. Strength is key here. You must lift heavy. And you can over time with gradual progression.

Smut, I thought it should be the opposite, high reps with low weights for endurance, not hypertrophy for strength (perhaps as a progressions?)