Two injections into it things are just getting started.
Some men are “over responders” to such things as T, HCG, AI, etc. So it is possible that you are hyper aromatiser which is causing a rise or spike in your E2.
High E2 has reported effects of fatigue.
When you introduce TRT your body is going to go through some big changes in the next few weeks.
It should level off and stabilize after that time.
Again, only two injections is pretty early to really be feeling things...but everyone is different.
Hang in there.