again, thinking this is dust?

Just to point out if you cant see them they are to the left and right hand side, dust again? x

to me even the pattern of distribution looks like dust to me. And the fact that some are large, some are small, it's just like when you see light reflecting through a window and all the dust is dancing around, different shapes and sizes. I also see now sign of "tails" which orbs can have (to indicate movement) I would say these are really just free floating particles in the air reflecting light, simply because I don't see any hints to indicate otherwise, and just reminds me of dust when I see it. It would make more sense for orbs I think it if were just one or two and they had like a tail. You should try taking a picture of the same spot without your child in the room too, if you want more confirmation. If it still happens it's a really good chance it's just dust!