The enanthate ester takes some time to build up, several wks. At this point, I would expect to start seeing a difference, but it will between 3-5 wks,that you start to see a strong effect. Remember that not everyone expereinces insomnia, so be happy if you are only getting a little, but if you are on wk 4 and feeling that now, I am going to bet that it will get more intense in the coming weeks. 300mg is plenty to have a good effect from Tren E. If you can get through without many side effects, consider yourself lucky. Enjoy your gains!