Hi Lsmama,
My ds was waking between 4,45 and 5.15, I did feed him at this time and he did go back to sleep straight away til 7. However, about 2 months ago (he is 13 months) i decided enough was enough. I did wi/wo for about 5 days and he started waking after 6-6.30 ish, even 6.45.
He was great for about 2 weeks, then about a week ago he cut his back teth and he has been waking about 2-4 am and screaming for hours, even after meds etc.
I am hoping the teeth will have cut thru enough now not to bother him so much, but he woke at 3.30 last night.
Think you may be better to get him used to sleeping later, if he is not hungry, sounds habitual if it is the same time each morning. Your lo is younger so you have to aseess if he is hungry.
jo