If YOU feel no difference then do what you prefer, but I would at least get some bcaa's before you lift even if your goal is fat loss. I lift first thing in the morning. I'll drink about 32oz of water as soon as I wake up (just a habit, but I think it helps). 15 min before my wo I drink between 10-12g bcaas with glutamine , then 200mg caff tab right when i get to the gym. usually about a third of the way through my workout I'll sip on a packet of propel mixed with another 10-12g bcaa and glutamine, usually finish it before starting my last exercise. my PWO shake is a 1:3 ratio of protein to carbs, and a tbls of coco oil (plus creatine and beta alanine).
However, I usually do eat a carb heavy meal before bed time, and it is the only reason I don't have carbs before my wo. in the morning. I have been doing this for a while and have been steadily making strength, weight, and size gains.