Baby fighting sleep

Kaitlyn • Married, 26, 👶🫄

My baby will be 1 month Saturday. Her new favorite thing is fighting sleep. She fights her naps and she fights sleep at night. She had been really easy to get to sleep. I had been feeding her and burping and changing her and then swaddle and lay her down half asleep and in under 2 minutes she would be out at night. During the day she would eat and then we would play for a little bit and then she would be out. I know she's changing and starting to be more alert now so what can I do to get her to sleep. She'll go 2-3 hours without a nap and then only sleep an hour to hour and a half?