Congrats on your new baby girl!
We have a 17 month old with a PWS on his right leg from his hip down to his toes. For now we have decided against laser treatment for a couple of reasons. First, we are hesitant about general anesthesia at such a young age, and I have also read that laser treatment isn't as successful on the limbs.
For now we are taking the wait and see approach. So far we haven't noticed any changes in his PWS, but I am keeping a close eye on him!
Every case is different though, and had our son's PWS had been in a different location, or was darker we may have made a different decision.
Best of luck to you and your little one!