Gooooood morning!
So Lexi and Oliver are as different as night and day...and my god, I'm at my wit's end with Oliver right now! We've got our little routine down now where they go into their crates around 10-11pm and come out at 6-6:30am. Both pups were doing really really well with it, and Lexi still is. However, Ollie is a different story
For the past week or two, he's been waking up between 2-4am and just cries and cries and cries. Nothing in our routine has changed much, he doesn't have to poop or pee, his crate isn't too small...I just don't know what is wrong with him!

He doesn't stop crying until I let him out and put him in the kitchen (gated off). I've tried waiting it out but it doesn't matter, he'll cry ALL NIGHT for hours on end. Does anyone have any suggestions? I haven't gotten more than 2 consecutive hours of sleep since all this started and I'm really a mess. He's taken to getting up every half hour/hour and whining until I pay attention to him.
I will be eternally grateful to anyone who has any insight into my little pup's head right now

(sorry if this post is a little discombobulated, I'm such a disaster right now!)