Convert Repeater Field to Gallery Field

Is it possible to convert a repeater field to a gallery field?

I'm doing a tune up on a site I built early last year and I was using a repeater field for a gallery and I want to update that to a gallery field instead. I'm sure just changing it over to gallery would break it, what's the best way to go about changing that out and keeping the data attached, there are probably 30 iterations of the repeaters that I don't want to have to manually change out.

Any advice would be helpful.

Thanks,
Nick