When he first moved to one nap I did
7am wake - milk
8ish breakfast
10ish snack (fruit usually)
11ish toast or bready something, dairy something, and a banana and then straight to bed (so the carb, the protein and banana as it is filling!)
130ish - wake and veggies, fruit, meat, rice crackers - so could be thought of as a large snack or the rest of his lunch
330 - light snack to tide to tide over till dinner, such as raisins, rice cracker, slice of cheese
430/500 ish dinner
I did find that at first I was trying to decide a "schedule" for his meals, but the move to one nap meant that his nap could swing 30 minutes early or later on any given day, and/or that some days were 2-nap days when I didn't expect them to be, so I had to abandon the idea of "this is how meals will be timed" and ended up rolling with things and being lot less rigid than I like to be! (I need things to be a set way or I don't cope well so it was a good lesson for me!!!) I did just sort of "feed him up" as much as possible in the mornings and live with it! He has never had hunger wake him from a nap, although he often wakes from naps and runs straight to the kitchen because when he wakes he realises he is hungry.