I say "Go for it!"   my best friend of 30 years just graduated in December with her RN degree,  she passed her boards 2 weeks ago.  She's worked at a hospital for 19 years, has always wanted to do it, started it two other times and life always got in the way somehow.  I'm so proud of her to have finished her dream. She's 43 ... I don't think it's too late. In her class at least half the class was over 35, the older students actually did much better . It's a great career choice, there always seems to be a shortage.  I think it's a good idea to start the CNA program to kind of get a feel for it and know if you like it before the April deadline.  If you can't get in the CNA, try volunteering at
a hospital ... you can at least see the environment.  It will be a lot different from your legal background.
Good luck!!!  
Nancy