That's a pretty modest dosage you have there.. Nothing over the top, and it's in fact just slightly out of the therapeutic dosages so its not heavy.
Try adding some DHEA with some sublingual vitamin b12 complex and take it from there, cut back on your caffeine just for a few days..
In "some" users after a Nandrolone injection it can signification increase circulating levels of both corticosterone and ACTH levels, corticosterone concentrations there after can be low almost like a prolong dump/smash, almost inducing a state of adrenal fatigue by other methods of action, basically simulating adrenal fatigue like symptoms.. Some compounds will do this to people, it's mostly drugs like MT1,SD and at times trenbolone..However ND can display these characteristic in some users.. In the main time cater more towards your diet and consume more dense proteins and other macro's.. Below will be an example..
From the NCI Dictionary
Nutrient-dense foods contain vitamins, minerals, complex carbohydrates, leanprotein, and healthy fats. Examples of nutrient-dense foods include fruits and vegetables, whole grains, low-fat or fat-free milk products, seafood, lean meats, eggs, peas, beans, and nuts.