@VanGoSunflowers
Brie was sleeping in her own two rooms at night from the start, we got her at 8 weeks. I was the other side of the dog gate so she could hear me. The very first night she woke a few times, and I got up, went through and cuddled her, but after that it was fine. But, as I said yesterday, Pyrie boys are more clingy and girls more independent. I don't know if that is true of Labradors, we should possibly ask @tizwozliz
With regard to day sleeping, I got Brie used to me being in and out, sometimes she would get up and follow me but other times she'd stay put, snoozing under the table. I think some people now refer to it as 'flitting' in terms of puppy training, that is you flit in and out of their space so they get used to being left for short periods.
I'm not sure that I'm representative of what is normal for 8/10 weeks, though. I don't crate, I pretty much let them be who they are and do their own thing - but I do have an exceptionally independent minded breed. The working dogs are chucked in with the sheep at 6 weeks, so while they're babies, they do show adult behaviour quite early. I don't know if that is exactly the norm with gundog breeds or not.
So far Brie isn't too bad with fireworks or thunder. Algy was worse; he used to insist on going outside to bark, presumably thinking he could chase them away 😆