Secret Potion No Longer Works

I go through this phase every couple of month.  I start to get really tired from working so much and pushing myself to my physical and mental limits.  I start microsleeping at both jobs.  In order to offset the sleep, I turn to energy drinks.  Redbulls, Monster Energy Drinks and 5 Hour Energy shots are my weapons of choice.  The problem with using them is that after a while, like with any drug, my tolerance gets higher and I basically become immune to them.  I'm at the point now where I drink 1-2 of something daily and I am still dozing off. Guess it's time  to let them go again.  They have become a useless waste of money.