@CityKity hopefully this will be reassuring. Before I had my son, I was all about sleep. Needed at least 8 good hours a night, would be an absolute zombie if I didn't get my "quota". I had a small freak out around 37 weeks along the lines of 'what have I done with my life, I will never sleep again'. DS is not a great sleeper, he is 2, we still cosleep out of necessity, and I am yet to have uninterrupted night since he was born (I do all the night wakes, but that's a story for another day). BUT I am ok. I somehow function ok. I work full time in a stressful role, and have been managing fine. I don't know how, but you just do. Your body really adapts. It will be ok, I promise.
@AnnieApple123 and @2020in2020 I right there with you with cosleeping toddlers. I don't have a plan either.. so glad to hear there is someone else in this position!