From 2 to 1 nap???

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My daughter who is 13 months just started getting harder and taking longer to put down for naps. She gets about 11-12 uninterrupted hours of sleep at night and takes 2 naps for about 45 mins-1 hour. This past week I can still successfully put her down for her naps but it is taking sooooo much longer than usual. I read online that the transition from 2 naps to 1 is usually around 14-18 months but could be sooner or later, but I’m worried that if she’s truly not ready then maybe it will mess up her night sleeping or something but I know it has to happen eventually so I’m wondering if her time is now. Any suggestions? Does it seem like she’s ready for only one nap? Or should I try to push the naps later or something?