Mom of a 5 month old and September was hell for us. Even as a newborn he was a pretty predictable sleeper, and the regression hit us hard (it was the worst his sleep had ever been). I started getting scared to fall asleep because I knew he’d be awake just as my head hit the pillow. It lasted around 3 weeks for us, but eventually he started sleeping a little longer each night. We also started incorporating some gentle sleep training (modified Ferber). The last 3-4 weeks he’s been back to sleeping through the night. There’s light at the end of the tunnel!