Well that dinnertime wouldn't work with a 10.30 or 11am nap. Can you not change that? I'd give her a solid meal around 9 or 9.30 and then another shortly after any milk she drinks on wake up from her nap. The other option is to have a much later nap but I think 4hrs is probably too long and it won't leave time for two good naps which she likely needs.