Sleep better than what?
DS mostly woke every two hours until he was 2.5. He slept through the night (9pm - 6am) for the first time at 2.5. He now wakes twice a night, once for gas a few hours after he goes up; and once around midnight when he runs to my bed. He’s awake for less than five minutes each time, and otherwise sleeps 7pm - 5am. That seems great to me, but would still be shocking for other people!
It is really hard. I’ve struggled with it so much more than I thought I would. My brain is always tired. Remember that it will end, and if you’re able to get early nights or do daytime naps, do them! Whatever makes it easier to get through.