When should I stop swaddling my baby?

4 months. It's a good idea to at least loosen the swaddle-- or leave one arm out-- by about 4 months.
As soon as workable. Swaddling helps babies who are spooked by the shaky random movements of their limbs. Wrapping gives them the comfort of the womb but needs to be loosened over time as baby adapts to the new freedom.By a month, you want to have baby in a onzie, on a firm mattress, in the crib with no blanket, pillow or other material. Excess bedding can entangle baby & lead to suffocation.