Lots of super advice already.
We have a now 7 month Cockapoo, and she's a joy. Sleeps through, she has done from about 10 weeks, think we've been very lucky with her, but I also got a heartbeat to mimic the sound of her Mum to soothe her.
I'm attaching the one we have, and honestly, it's was wonderful the first few weeks. She'd rest her head on it and snooze. Now she tries to destroy it as a 'toy', but I really think it helped.
Her first night, she cried, so she slept in my arms on the sofa. From her second night, we settled her in her crate, heartbeat going, and a blackout cover over over the crate. We took her out for her wees during the night, and she's settled very well.
Enjoy your new addition. It all goes so fast! ❤️
Pictures attached.