If you've been playing piano a long time, I don't see why you'd lose much from taking a break for a little while. If you take a break for a couple years, yeah, it might be some ramp up to get back where you were, but if you stop for a few months you should be okay. In the grand scheme, let's say you've been playing piano 10 years - that's 120 months. What's 3 months off?
I don't want to imply you wouldn't lose
anything, but if you've acquired some level of skill at piano it shouldn't be
too much work to get back to where you were.
Just my opinion based on experience, I don't have any data to back it up.
