E.B.
My son, for a different reason, woke like this every night also. He is 9 now. Looking back I wish I would have placed a mattress, next to him and stayed there until this wasn't an issue anymore. I feel that what I did do, prolonged the whole thing. In our case it was anxiety and the only way to give him "peace" would have been to feel secure. Peace knowing you're near, rubbing his back, holding his hand etc. I think if you did these things, this would disappear within 2 weeks. Good luck and congratulations on your new baby.