DS went to a single sleep when he turned 1 or so. Our schedule is:

7.30am - wakes up
8.00am - breakfast & milk bottle
10.00am - morning tea
11.15am (or so) - lunch
12.00pm - nap & milk bottle (can be between 45 mins to 3 hrs depending on activities in the morning)
3.00pm - afternoon tea
6.00pm - dinner (is late as I try to make sure DH is home as well and he usually arrives home from work around 5.45pm)
7.30pm - start wind-down (so reading a book, quiet play etc)
8.00pm - bath/shower
8.30pm - bed & milk bottle