How are you taking off your polish? A low/no acetone polish remover should help and a nail buffer is a good idea too to stop any minor flaking from getting worse. Never ever peel off nail polish. Even if it starts to flake get out the polish remover and soak it off.
Not really. However, if you moisturize the cuticles, that’s generally enough. When you take off the polish, do it before a shower, then moisturize after the shower, let it soak in for a few minutes, and wash the moisturizer from your hands and nails if you want to put polish on again. I generally leave the polish off for a day or half day every week or so.