Insomnia

Alright ladies, does anyone else have nighttime insomnia? I am a low sleep needs person anyways but holy moly I am exhausted all day, work full time, have a 2yo and then come nighttime... I’m awake, like ALL NIGHT! Unfortunately my job requires dedicated attention to detail and the exhaustion is giving me terrible headaches. I did not have this with my daughter :( currently 9w3d. Help, what works?