I am taking 18 hours at my university, training, and playing the guitar several hours a day. I have very little downtime. I am very stressed. I get 7-8 hours of sleep a night. I do not consume caffeine because I am straight edge. I am in a constant phased out state of mind. I am not unhappy, but training is becoming difficult. I feel I burn out after 2-3 exercises at low reps. I have dropped my powerlifting routine and am going to go bodybuilding under a standard 10x3 template (haven't done this in almost a year), and hopefully the change will help me to cope and increase my volume slightly. When I can lose the stress, I will go back to powerlifting, but I feel I am on the verge of overtraining even with relatively low volume.
My question: is there any supplement I can take to help with recovery and give me some zest again, barring AAs? Any advice is appreciated.