I don't even know how to describe what I mean really. Her sleep is just constantly disturbed by something or other. She either startles herself awake (more so during naps and sometimes at the beginning of a night), and I mean her whole body jumps and she'll often suddenly cry. Or, past midnight, she'll be mostly asleep but start writhing and crying and need resettling because I'm assuming, she's uncomfortable with gas. Most nights we have a period of 1-2 hours of her needing resettling every 5-10 minutes.
As a result, we contact nap (because it's the only way to resettle her quick enough to get a reasonable length nap), and she's never getting solid blocks of sleep at night.
The room is dark with white noise playing so it's not external stimuli causing the disturbances. I just literally cannot imagine what it would be like to put a baby down to sleep and to be able to get on with something because they're just going to sleep solidly for a while.