No pruning necessary as far as I can see. Plants are dense and compact and the foliage looks good.

It is always a good idea to include your geographic location with these sorts of posts as advice can change dependent on location.

Thanks very much! I am in SE Michigan USA. I bought these to replace some magnificent old Rhodies that died on one of those rare occasions when it hit 25 below here. If I had known what I know now, I would have just thrown some blankets over them :(

Wow, they look just fine to me too. Besides, they currently have dormant flower buds now and you do not want to cut them off and loose spring 2023 blooms. Flower buds normally develop by mid summer 2022 and by fall 2022, the flower buds are getting to be well developed. If they ever need pruning, do so after the last flower buds opens; you will then have a few weeks (or a month) before flower buds begin to get developed.

If your plants are often subject to desiccating sun and wind in the winter or subject to warm spells in winter that may compromise dormancy then consider rhodies that are one USDA zone hardier than yours is. Also, fertilize only with slow-release fertilizers until about three months before your city's average date of first frost so the plants will harden and go dormant on schedule. So for example: the average date of first frost for Ann Arbor is around the 2nd week of October so stop fertilizing around the 2nd week of July there.

Note: they do appear to be too close to each other but then again, I do not know how wide these varieties get.