DH doesn't tend to wake up (like a lot of our DHs it seems!) and if DD2 is really unsettled, I take her to the lounge and watch TV. I've only done that once I think, she's been really good.

I put the change table in our room too and either switch the toilet light on in our ensuite for a bit of light or just use the little night light I bought from Ikea (little rechargeable green light sold in the kids section.

I feed DD in bed and play on my phone to keep myself awake. It provides enough light to see what's going on too.

We haven't had an issue at all with DD2 and she settles back to sleep easily most of the time and so do I. If we were to have a really bad night, DH would happily move to the spare room.

DD1 was super noisy so we put her in her own room at 9 weeks. Until then she slept in the bassinet in our room and I took her into the lounge for feeds and the nursery for nappy changes. I realise now doing that was a mistake. Moving rooms to feed, the extra light, watching TV, etc meant we were both 'too' awake a lot of the time making it difficult to go back to sleep.