Puppy house breaking regression?

Hi everyone. I’ve lurked and admired everyone’s animals for a while. Recently we had to put down our 11 year old Dane and decided to go ahead and get a new one.

Mind you, it’s been 11 years since we had a puppy and we weren’t expecting her to be this difficult. So the first week she was constantly going to the bathroom in the house, that’s expected. We’ve been religious in taking her outside every hour, praising and giving treats for going outside. Pick her up and take her outside if we catch her going in the house. Towards the end of the first week she was catching on, second week, she was averaging one accident inside a day, no big deal, and late into the third week ( 2 days ago) she started going pee and poop inside all the time. So we started taking her outside every 30 minutes, and despite this, she is constantly going in the house between going outside.

There’s a few questions wrapped up in this.

Are we expecting too much from her at 11 weeks?

Tops or tricks to assist/ correct the behavior or do we just need to wait it out like we are doing?

We have been looking around and researching and can’t really find a great answer other than some puppies can be house broken by 3-4 months while other could take up to a year to fully grasp.

I wouldn’t think much of it, but she was doing so well, then one day she just started going constantly in the house, despite having gone outside at least every 30 minutes.

Thanks in advance for any thoughts or info