This is SO complicated.. help

legion

My child is 1 year old, wakes up around 1pm.. stays up about 5 hours till 5-6pm takes a nap about three hours, wakes up at 8pm, wants another nap around 10pm or 12am, wakes up at either 12am if he went down at 10 or wakes up at 2am if he went down at 12am, then stays awake another 5-6 hours till 6am.. how in the HELL do I change this schedule?