ebf switch to formula

im switching from ebf to formula feeding. my question is, how do you put the baby to sleep after feeding from a bottle? most specially at night? my baby would almost always nurse until she knocks out. that's just what works for us. now that im switching to bottle feeding, do i put her to sleep right away? you might think this is such a stupid question but i really need help. ive tried bottle feeding my baby before but she doesnt get sleepy after. i rock her when she gets fussy but she wont fall asleep. she just wants the boob! as much as i want to keep breastfeeding, i just cant anymore healthwise. please help