Off Cycle Supplements

I am a college athlete and I am looking for supplements to take between cycles of test E. I have tried a few test boosters prior to this, and like all the research told me, nothing comes close the real thing. I want to find a few supplements to take when I come off my first cycle that will help keep my test levels from diving too far. I want to maintain the gains I have made (about 15 pounds) and avoid loss of strength, energy, and stamina.

My primary concern is not in the weight room but on the field as I will be practicing about 4 hours a day, 5-6 days a week. Any nutritional/supplement advice for this?