I went to a day session of sleep school when DD was 6 weeks old and it was the best thing I ever did so no judging here! I'm sure they gave you lots of tips on wrapping and settling techniques so I won't go into that. My DD can now self-settle really well. She sleeps all night but not much during the day either. She will sleep 40 mins max at a time. After sleep school I was so worried about trying to do things 'right' that if she woke up after a short amount of time I'd always try to resettle but I think it just stressed both of us more. Now if she wakes and cries
I get her up straight away. If she is happy lying there I wait 10 mins or so and see if she will go back to sleep (sometimes she does) if not I get her up. I guess my point is I wouldn't worry too much about resettling. Maybe work on her being able to get herself to sleep initially and then go from there. Like I said, I'm sure you've been given heaps of tips so wont go into them. If you do want some more ideas though just let me know