You dont know when, but you will know if they started already. These tips will help you.
Week 1-2:
Week 1-2 are the simplest weeks out of the others. There may be little pranks, like for an example if you have an alarm in your house and it alarms you that someone broke in your house, nobody broke in your house...well at least that's what the cops would say.
Your child will blank out, out of nowhere! Lets say they are playing soccer and out of nowhere they just stand there staring at nothing, standing still, no movment not one bit and suddenly.....ooops they had an accident.
Your child may draw a picture of a house on the left side, then next to them are three tall grey creatures.
You may wonder "Who are these grey people?". They are the Grey Ones! (I drew an example of a picture your child might of drew)
You or someone in your family will get a scratch or a bite or something like that. It will be somewhere nobody will see it. That is some kind of entrance for these creatures to enter your body to control it.