Yes, absolutely — it can be inanimate for a few days and burst to life suddenly afterwards. To clarify: this mannequin, unlike the one in the walls, is socialised. It's not going to kill Jim or Finn. It will also be much clingier towards the person whose hand it squeezes, so toss a coin. The animate mannequin is just a logistical inconvenient, because it's something to look after (see the sheet), until you dump it in a ditch. Also, idk, I thought Jim's genes could do better than a burlap child, but you know what, we all have an ugly grandpa.

Also: this is a lot that just got thrown at you. Please take all the time you need to decide.