Hello sweecherripy
If you used bleach before, it is unlikely that you can lighten your hair to the same shade without using it again.
You might use a high-lift tint to bring the roots up as far as possible and then tone the rest of your hair to the darker shade. -- Becareful about trying to lighted too much without bleach - thats when your release the red tones.
There are some ideas here:
Hairstyles for Large Women