My 11 week old currently sleeps in 4-5 hour stretches at night from 12am - 10am.
However during the daytime it's nearly impossible to get her to sleep more than 20-45 minutes, meaning she's fussy and irritable all the way until 12/1am when she finally sleeps.
The only exception is when we're out in the pram where she will sleep the entire time, 3-4 hours. Obviously I can't just take her out for every single nap so I'm at a loss on what I should do. She does sleep well when she's on me, it's just that when I put her down, she wakes up soon after.
Ive been trying to follow wake windows etc but I spend ages trying to put her down and she just won't sleep! Last night she was up 6 hours in a row, only closing her eyes for 5-10 minutes at a time.