Think about doing an escort quest where the NPC walks at 25% your speed and how irritating it is to have to keep waiting for them. Now imagine the NPC moves at %0.0025 or your speed instead. If he ever wants to travel with any companions, this might be more to protect his sanity than anything.
You gotta slow waay down with your kids. Remember, their brains are still developing all the pathways they will use in life, but it takes time. If you’ve only recently been allowed with them, they are not going to understand any nuance of the situation immediately. They will in time and probably gladly accept anything you offer one day.