bought a 22lb frozeen turkey and put in frig on Sunday. it's still hard as a rock. when should I put it in the water bath to defrost faster.

Yes! Soak it in COLD (not hot) water, and change the water every 30 minutes (takes about a half hour per pound). Here are some more tips: https://food52.com/blog/9187-how-to-deal-if-you-forgot-to-thaw-the-turkey