Of course you can… nothing else to do man? To study, a job? haha… but, you can work out twice, no problem. If you are feeling good, with energy, go for it… this over T thing is BS… already proved.
I only have two days off a week, on sat and sun i would do heavy stuff at 100pm then get groceries, come back and do high reps at other gym, accessories, go by how you feel .
If you start feeling burnt out back off, two a days are not an all year thing ,unless you are full time bodybuilder.
Then you workout am have a light meal rest workout pm , i am suprised Arnold Schwarzenegger did it, but he did . Plus on tren you want be as tired as possible at night .good luck