The past 2 weeks my 13 week old scream cries before every single nap during the day and before bedtime. I know she’s fed, burped, changed and have had about an hour of wake time. I try to watch for her tired cues and as soon as I see her yawn/rub her eyes I try to offer a nap and as soon as I put her in her sleep sack and start rocking her she immediately starts scream crying for a good 15-20 mins before falling asleep. When she does fall asleep she’s a great sleeper but getting her there feels like torture. Is this a normal thing or am I do something wrong.