tgm, my son was like this and in the end my husband put his foot down and put him in his own room as he got to thinking that my son was being disturbed by me trying to settle him. I was dead against it, but low and behold the hubby was right!
If my son did wake, I didn't notice so much and he slept so much better!
Only thing that didn't change is that he was and still is an early riser! 6:30am is all I can get out of him, but he's got better from 5:30am
.... he's 4 yrs now!!! LOL