Not sure about the tenseness, but I was feeling so energetic upon taking it, i think it was mostly psychological, I never did have problems with physical energy. It was so feel-good, like a compulsion to take it and I joked constantly to my friend that I was shooting up heroine like a drug addict (less damaging and so much better psychologically, for sure). It felt that energizing.
Anyways, regarding time, did you mean changing your schedule of when you take it? I think I ritually do mine on the day I first took it, but according to my doctor a day after (since I cant always schedule my appointments same day) works fine. I assume T isn't super restricted to timestamps of when to take it so if you want to switch up taking morning or afternoons it's fine, as long as it's roughly around the same timeframe. Of course I'm no doctor that's just been my experience with it.
Also congrats on that, it's awesome.