So my oldest is gonna be 16 months tomorrow and 4-5 days of the week she wakes up around 3:30 or 4 am and starts…

So my oldest is gonna be 16 months tomorrow and 4-5 days of the week she wakes up around 3:30 or 4 am and starts talking. A lot of the times I’ll ignore her and watch her and she’ll either play until she sleeps or lay there waiting for me to move. Then other times, like tonight, she crying and crying and crying and that wakes up her baby sister. What can I do? I can’t anymore I’m tired! Lol she used to be a BEAUTIFUL sleeper! Always slept thru the night since she was 1 month old...is it her molers coming in? Idk I’m just exhausted 😩 Bailey(3months) has been the zen one lately 🙏🏼