Inappropriate nap schedule for 7mo

My 7mo attends ifc and is currently on two solids a day (lunch, snack). Lunch is served at 11am after which the children have nap time from 1215pm. As a result, my child has been staying awake from the time he wakes up till nap time at 1215...at times his wake time can be as long as 5+ hours. At 7mo, he should ideally still be on 2-3 naps with wake time 2.5-3h max... Some days at ifc he only has 1 nap and refuses to sleep till bed time. On weekends at home, he still takes 3 naps at the usual timings. What should I do to ensure he gets enough rest at ifc? The ifc schedule is fine for older kids in 1 nap but not a 7mo. Any advice would be appreciated :(