No worries, glad to be of help.
It can’t hurt to take a break. 
Perhaps take a break from any fields which induce electrical stimulation in the brain for a little while.
Afterwards, Superhuman Genius might help. It is neuroprotective and can help with regenerating or rewiring the brain so long as the field is not overused. (only 1 or 2 listens each day)
It’s a bit difficult to answer this as it depends upon what is causing the issues and how you feel. You might try listening to them for a little while after you feel ‘normal’ again.
Also, Brain Regeneration is always a helpful addition at the end of any brain audio stack, and even after brain-related exertion and activities such as studying.
It can help the brain better develop new connections and counteract many negative effects from mental exertion, such as after the hours studying that you’ve mentioned.
As @_OM put it in another thread:
It’s certainly a possibility if overused beyond what your system can handle, and it’s best not to overuse Superhuman Genius in particular.
Here are Dreamweaver/Sapien’s recommendations, from the description:
Use twice a day at most, do not use overnight. Do not overuse.
Generally speaking, it’s often best to incorporate opportunities for rest from electrical stimulation and active growth, to allow your brain and system time to integrate new changes. Brain Regeneration can help support this.
This allows your brain and energy system to better incorporate and adjust to any new changes you wish to make, as compared to too much continuous growth and stimulation.
A similar concept can apply to many other fields and processes.
What you’re experiencing might also be due to a combination of factors, such as some of the factors @ryantraveling has mentioned.