Just stop it.
Coffein and Taurin (another stimulant in energy drinks) are great if you only use them occasionally. Use them daily (or many times a day) and your body gets used to it or, in a bit longer term, gets addicted. On the other hand, when you become an addict, your body is so used to them they donʼt work anymore, so you need more to make them keep you awake.
Sounds familiar? Yeah, a lot of drugs work this way, too.
Also, there was a lot of research on the subject. Most found that an apple in the morning boosts your productivity much more significantly than a coffee. In fact, you should drink your first coffee somewhere between breakfast and lunch if you want to maximise the effect.
Another thing to consider is why you need to stay awake at night? Why canʼt you do your work during daylight? Ask this yourself (and answer honestly) in light of the fact that a good nightʼs sleep worths much more than a couple of lattes (in terms of both productivity and health).
I also say these out of experience; i used to drink multiple energy drinks a day during my twenties. I started to feel much better when i stopped it. I switched to drink one coffee late in the morning, and sometimes another one early in the afternoon, and it helped a lot. Then, few years later, I stopped drinking coffee altogether. I occasionally drink a latte (say, once a month) and when i do it provides me a great deal of extra energy.
So yeah. Just stop it. Oh, and ditch soda, too; drink a lot of clear water instead.