Still 30 min naps

Je

My daughter still naps for 30 mins sometimes. It's really frustrating. It constantly messes up her bedtime. I wish her naps were consistent. She does have one hour nap a day. But sometimes two more naps 30 min each. She ends up sleeping at 9 or 9:30pm. When she does nap two 1 hour naps a day, she does sleep at a good time. But it's so frustrating.

Any babies the same?