Wouldn't say I have been excessive with drinking, I did have a big on the weekend, but the bloods were done prior, as for caffeine, I have 2 coffees a day, on the odd occasion 3, but yeah sleep has been lacking a bit.
So I am not discounting the fact that alcohol could be a contributing factor which is one thing I am trying to cut back on, so drinking more water and restricting to having a beer to the weekends, however, if I have a drink during the week it will only be 1 or 2 drinks at night, but like I said I am trying to reduce this as well.