What is the ester you are using? If you got there trenbolone enenthate, then it would not be surprising that you are not feeling much. If you are using the acetate, then there is something wrong.
Increasing the dosage is not the way of solving the issue. Besides, keep in mind, that if you got the legit stuff, 300 mgs should be more than enough to get awesome results because trenbolone is 5 times as potent as testosterone is.
Therefore, it is either the long ester, or a shitty supplier that you got.