The time is there; you just have to find the willpower :)

Take the TV time and trade it for reading a page or two before turning the TV on. I think it just requires some time to adapt to generating a second wave of energy. It won't be there most days.

The alternative is coffee. I did a two month stint of sleeping only 11pm-4a last year (had a single 1.5 yr kid at the time). It was tough and ultimately my body's mechanics started to fail, so I don't recommend that. Now that I have two under 3, I strive for more sleep and therefore only a chapter per week (or a section per week on math/science textbooks).