Combating frequent night wakings? Halp!

Angie

My 12 week old is still looking to nurse through the night. She is getting worse not better 😩 she sleeps 90 min to 3 hours then wakes to nurse sometimes its for 15 mins but sometimes its only 3 then she may or may not transfer easily to her crib. Sometimes it takes me an hour. Are we supposed to still be feeding on demand at this point? Anyone have any suggestions to get both of us some sleep? Im breastfeeding to sleep, Ive got white noise blackout curtains and shes in a love to dream sleep swaddle. Thanks in advance!