I have successfully sleeptrained the baby, now how do I sleep/poop train myself?

We coslept with the baby until they were 13 months. During that time, the baby would have a consistent sleep schedule that involved waking up around 4-5am, looking for an adult to snuggle with, and sleep again. However this woke me up and I couldn't fall back asleep. This also for some reason made me go poop around that time (after making sure the baby was asleep).

Now that the baby is sleeptrained and in their own room, I thought I would get more sleep, but I kept the same schedule... How do I change it??