Is less sleep normal?

My son is 2yrs 9months. He used to sleep 7:20 PM until about 6:30 AM while still taking a 2 hour nap at daycare and on the weekends. Since we have been home with him, he now screams like crazy when we try to leave the room at bedtime and doesn't end up going to sleep until 8:30 or 9:15 PM. He then wakes up at 5:30 AM. He does still sleep around 2 hours for nap. Is less sleep at this age normal? I don't know if he is just off schedule because of us working from home and daycare being closed or is this is the new normal. via /r/Parenting https://ift.tt/2ScYuMR