Lauren,
I was just thinking after the other 2 replies, I did recommend CFing to you a while ago, did you ever try it?? I have used it with DS since he was born and I find it an excellent way to get more oz's into him. It also means that the bottle you dropped when change to 4hr's is available again
I take it this is your recent routine;
7AM - 7 oz eat
9AM - nap for 1.5-2 hours (sometimes 1 hour but usually not)
11AM - 7 oz eat
1PM - nap again -1.5 - 2 hours
3PM - 7 oz eat
5-6:30- capnap in his swing (only about 45 min, he just usually will catnap around this timeframe when he's not having activity time)
7ish- bath, book, bed by about 8ish and one last feed (7oz)
now without DF (between 10:30 and 11) he's been getting up about 2AM and again at 4 AM and 5AM and 6AM... with DF, it's 10:30 PM, midnight, 2AM, you get the picture
Am I assuming from the routine your last feed is about 1945?? Does this mean it is nearly 5 hours from his last bottle?
With CF you could try;
3pm
5pm
7.45pm
or
3pm
6pm
7.45pm
Or since you have also posted in the night wakings have they discovered it is a prop or some other issue?
Lauren