I would personally decide on a dose and then stick to it, 300-400mg a week for test only sounds abut right tbh. The issue imho is dialing in e2, i could never get that right.
And neither will you if you keep yo-yoinf your test and ai dose.
Problem with test is that it has another component, estrogen, which changes as dose is changed. Its not as simple as with for example tren acetate or another fast acting non aromatizeable aas, which is a single factor in itself, and by changing it you are changing a single variable.
Also libido was down in the dumps on 500 test, a lot of people say it should be the other way around, but i guess everyone reacts differently.
You say you feel tired...that sounds more like low e2 to me than high.
Are you flatter than you used to be? Do you feel like your joints have seen bettter days, especially while performing pressing exercises? That is also the sign of low e2.
Higher e2 is now kinda an easy one for me, i feel emotional and mentally weaker, but not tired, and any dose of test above 200mg a week without an ai will make me feel like that, unless another non aromatizing aas like tren or masteron is added, then i feel fine.
250 test by itself and i will be watching chick flicks in no time
.