@AmigoDog Pistachiopup is a good sleeper but I think we just got lucky!
For the first week she was with us she just had a crate to sleep in which was in the downstairs study. She'd go out for a last wee or poo if she needed it at 10.30pm ish and we'd put her to bed. I'd sit by the crate for a while until she was asleep then creep out. So I'd usually be in bed just after 11. We'd set the alarm for 2am and take her out for a wee. Then straight back in her crate. I'd sit by it again for a few minutes before going back to bed. Then I set my alarm for 6am to come back down to take her out and the day would start then. She'd do a wee straight away and a poo prob 15 -20 mins after being up. She's never poo'd in the middle of the night.
You're all much hardier than us. Within a week of broken sleep we couldn't do it anymore. Ordered a playpen and her crate is in there now. Had to move it to the kitchen/family room though where there is a tiled floor rather than wooden floorboards in the study. (Didn't want wee on the floor in the study!)
First couple of nights we shut the crate door to get her to fall asleep but then opened it when we went up to bed. Left newspaper by the pen gate. When we came down at 6am she would be up sitting in the pen waiting for us and had usually done a wee on the paper. No poo ever.
Then she started waking up as we'd try to open the crate door before going to bed. So we just stopped forcing her to go in the crate to sleep. She has another bed in the pen outside the crate. Crate door is open and she can choose where she wants to sleep. Currently in the heat she usually falls asleep on the cool tiles rather than either of the bed options. I think she moves around in the night though switching positions - as generally the blankets in the crate look slept on too.
After a week of leaving newspaper out for her we were regularly coming down to no wees at all. So we don't leave it out now. She's just dry through the night.
We've also managed to push back the time we come down. Just did it 15 mins at a time. Now we come downstairs at 7.30 after we've showered and dressed. Don't hear a peep from her until then. At the weekend if we've gone to bed a bit later can usually stretch it to 8!
She's 15 weeks old now. She was 10 weeks old when she arrived and we did night time wee's for just over a week. So somewhere between 11-12 weeks we stopped taking her out in the middle of the night.
I guess the downside of what we've done is that she's not accustomed to sleeping in the crate with the door closed anymore and not sure whether that matters. She still goes in at some points during the day if she wants to but never with the door closed.
If it were me I would stop the night time visits and see how he does.
good luck.