Is my 2 year old seeing a ghost?

I need some help and no where else to turn. My son is 2.5 years old. Recently he has been pointing to his corner saying "look mom look, mean, mean, all gone". He just started talking so it's kind of hard to get anything out of him. I have tried to ask in any way shape or form to figure out what he is talking about but that's all I can get out of him. Every day now he is saying this to me or his dad and pointing in the same spot. He will not sleep with his light off and today he got out of bed and I heard him sprint across his room turn his light on and jump back in his bed. He was starting to cry when I instantly came in. I asked him what was wrong and he started saying the same stuff. His heart was pounding. He was terrified. Today he called whatever it was "Bones". He has never seen anything scary and doesnt even know that word. Also I have noticed when the lights are off in his room you can see "orb" like things floating in front of his camera. The camera sits in this same corner he is pointing to.

Some changes we have had lately-

Moved to a new house in July

He decided he was done with his crib and would not stay in it the day before his sister was born

He has always been a great sleeper up until he could get out of his crib. Now he sleeps maybe 7 hours in a 24 hour span and that is after hours and hours of getting him to sleep. At first we thought it was bc of his new sister but she is now 9 weeks old and still no change.

My husband and I feel helpless. I am at a loss of what to do. Is this a normal imagination for a toddler?

Update- After speaking with a commenter on here I think I have made a plan of action. Many of you have asked if I can move him into my bed and that's not really an option. He has slept on his own his whole life and will not fall asleep in my bed. I dont think he understands what it is. Also we are under strict lock down right now due to Corona Virus and we have a newborn so we have to limit exposure as much as possible right now. My plan is to give this spirit no reaction or attention. I have taught my son to pray when he is scared and I pray in his room every night before bed. I have been leaving his light on and he sleeps much better. I am going to order sage, franknscents and myrrh to burn in our house. Once the lock down is up I will have someone come bless our house. In the mean time I will call a preacher or priest and ask them to pray over the phone. Thank you all for all of your comments, concerns and ideas. It has definitely helped me these past couple of days.