My internal clock

I have an internal clock that tells me it's time to get up and eat breakfast.  I wait patiently until Jim and Jean get up before I go back to their room to great them.  My internal clock also tells me it's time for dinner.  The only problem is I want my dinner at 4:30.  I will go to Jim or Jean and gently nudge them on the elbow then give them my cutest, starving stare.  For some reason they don't think I need dinner until 5:00.  I try to convince them I want dinner before 5 but it hasn't worked.  My internal clock also tells me its time to take nap.