How do I get 3 month old to go back to sleep?

Okay so my baby girl will be 3 months old in less than a week. For the past few weeks she’s been on this sleep schedule (that she made herself) okay she goes to sleep between 7:30-8:30pm then she wakes up between 4:30-6:30am every morning. The problem is I can’t get her to go back to sleep in her bassinet after she wakes up.. after she eats she instantly falls back asleep on me but if I try to move or move her at all she wakes up and then won’t go back to sleep for hours. But if I just sit here and let her sleep on me she’ll sleep for another hour or two.. and I’m so tired and would love to go back to sleep but there’s no way I’d be able to fall asleep with her on top of me, gives me way to much anxiety. So how do I get her to go back to her bassinet after her early morning feeding?