start tren in the middle of the cycle is a bad idea?

hi guys, Im in the middle of my cycle is 12 weeks I'm on sustanon 250 three times a week and I just got my hands on 20ml of tren Enanthate .



my question is if is good idea to start the tren now in the middle and why or why not?



this is my 3rd cycle and I had one of the cycles with tren before and i really like it the results are amazing.



thanks for your help

start tren in the middle of the cycle is a bad idea?