exclusive breastfeeding mommys of 5 months old

Ana
Hello , I have a soon to be 5 month old and I am exclusively breastfeeding she is sleeping through the night up to 5-6 hours sometimes still waking up once . Her normal time to get up is 7 AM -8AM and she feeds right away but only eats a bit before falling asleep and she wakes up around 10-111AM and when she does wake she doesn't eat till about hour to two hours later 
She's up most of the day now with maybe 1 good nap and little car naps here and there
My question is anyone else going through a difference in feedings 
I was feeding on demand and now it looks like she's more on schedule feedings 
I feel like She isn't getting enough to eat or I'm doing something wrong because she isn't stuck on me she is healthy and playing it's not like she's crying of hunger she will fuss once she is hungry will eat and go back to playing . I'm just trying to adjust to this . I am currently sitting writing this with one boob engorged lol waiting for her eat before I try to pump out but it doesn't look like she's budging . 
Thank you