Hi there,
For some reason 8 months is a very common age for parents to post about sleep troubles and disturbances. I am not sure quite why so many little ones go through this but my ds did too.
Did you recently wean your lo from the dream feed? If so, that could possibly have to do with the EWs. With a DF a lo sleeps about 11 or 12 hours but only goes about 8 or 9 hours without eating. So even though he or she is capable of going longer, they are not used to going 11 or 12 hours yet. With my lo we started doing an early morning feed in the dark and putting him back to bed, which we eventually weaned (or actually he dropped) a month or 2 later. It worked most of the time unless he had a poo and we had to change it - sometimes this just reinforced his being awake. You will know best of course if this will help for your lo.
In caes that doesn't solve it, here is a link with other common reasons for EWs:
http://babywhispererforums.com/index.php?topic=87109.0 You might want to try doing an early bedtime for a little while and then pushing up nap times little by little each day to extend A times.
HTH!