My girl at 9 weeks when I got her was pretty bad. The first 3 nights I had her next to the bed with just a gate to stop her from leaving the room, she didn't like that very much but eventually went to sleep, waking for potty breaks. After the first 3 nights I got her a crate which is in the kitchen. The first night she cried for 30 minutes, slept for 2 hours, repeat. By 3am she wouldn't sleep and I got up and let her into the bedroom.
After that I got a app for one of my old phones "Sleep and Relax" and I play a combination of rain noises and a stopwatch ticking which has really calmed her down. She has been fine with that for the last week and a half, only waking once per night for a potty break and going straight back to sleep afterwards, as long as a stand in front of the crate for about 2 or 3 minutes. I keep the crate covered with a blanket.
The only problem I have with her now in the morning, is she wakes as soon as the sun comes up, which happens to be about 15 minutes before my alarm goes off and cannot be settled. I think it is just because there is a lot of light leaking into the crate in the morning and she is ready to eat. I have bought a canvas cover for the crate which will hopefully have her sleeping a little longer in the morning.
Long story short, she took about 5-6 nights to settle into my routine and sleep through the night.