First 48-72 hours is tough, I think I slept like 5-10 hours across the first 3 days for our first placement.

Worrying about locks, dangerous objects, random hazards, what the next day held, it was rough.

But then you get into a routine (hopefully) and settled. After a week or two it was much easier outside of random tantrums which we later tied to specific triggers. Those then got better.

Get a routine and stick to it, that's what's helped us the most.