The oldtimers from the 40s and early 50s knew how to train without drugs.
Look to their routines for advices if you are a natty.
Reeves, early Reg Park, Eiferman, Grimek, Clancy Ross, the old York routines, etc.
Don't use a pre-contest routine for general training.
Any training regimen devised during the drug era is not optimal for nattys. Mentzer was on a load of drugs.
Yates was on a load of drugs. Arnold was on drugs. Why would you think you can train like them if you are not on drugs?
If you are a drug user then you can have success with just about any training routine.