When do the puppy blues lift?

[pupblue]

I have an 11 week old golden retriever. First dog since I was a child.

She's gorgeous but at the moment I'd happily go back in time and not get her because I'm miserable.

It's the biting. No matter what I try. I just don't want to be near her at the moment (yet at the same time I do).

Toileting too. It's making me so anxious I think I'm overstimulating her.

Where is the light at the end of the tunnel?

The crate is open in a pen with a stairgate at the door. I'm just trying to find ways to encourage him to happily stay in the pen. Not all the time, just enough to have a break from the 2 year old. I found yak bars today and he chews happily on them so fingers crossed.