Girls hello everyone!! My daughter stopped falling asleep on my hands …

Girls hello everyone!! My daughter stopped falling asleep on my hands ??‍♀️ She wants to sleep and cries and rubs her eyes I try to rock her starts pushing me away crying and now she only falls asleep in the stroller, what could this be related to? Just that it's so hot outside I don't want to go out with her but when I put her in the stroller for about 20 minutes and she sleeps. Maybe I'm doing something wrong