So private lessons are obv a lot more expensive but if you've done both are they worth it?

My oldest would be one of the older ones in the 3-5 age group of the group lessons. She is decent in the water, she just needs to work a bit more on coordinating all the movements but she can go the length of the pool and more in a combo of swimmingish / dog paddle.
So not sure if it would be worth it to do fewer lessons with a private instructor or more lessons where the focus is probably going to be on basics she already has down but could maybe finese?