Am I doing my baby’s sleep wrong?

Baby is 11 weeks. Last week she started sleeping 7 hour stretches! She goes down around 8:30- 9:30 and then wakes up around 3:30. I’ve been putting her pacifier in her mouth and patting her back to sleep and then she sleeps another hour. My partner gets up for work around 6 and feeds her. Usually between 4:30-5:30 she gets up again and I can give her a pacifier and get her to sleep again but she wakes up after 20-30 minutes. I’ve just been repeating this until he wakes up. She doesn’t seem upset, but I’ve been wondering if I should feed her when she starts walking more frequently around 4:30. Since she’s only going back to sleep for 20 minutes then, is she hungry?!? I’m feeding her enough calories during the day but now I’m worried that I should be feeding her at 4:30 and she’s really hungry…Baby is small. She was born at 5 lbs and is still under the growth charts but my pediatrician wasn’t worried at her 2 month checkup because she is growing at a good rate.