Due to scheduling restrictions, my training schedule is:
Mon- chest, Back
Tues- Biceps, Shoulders
Wed- Triceps
Thurs- Legs

I use to have back with biceps tuesday's and shoulders with chest, but just switched.
Anyhow, I know when doing back exerising I'm probably using my biceps on some of the exercises. So the next day when I isolate and work only on biceps, I'm essentially working biceps back-to-back days which i know is a no-no. Given that I kinda have no choice but to lift 4 days in a row, how should I separate muscle groups?
Thanks