You were very wise to go for CNA first in order to get a better idea of what a nursing career would entail. Much better than investing tons of time, money and effort only to discover that you hate nursing.
I have been around for a long time & can't recall anyone who got a first job with a "healthcare administration" degree. That is a popular bachelor's degree choice for people who are already employed in healthcare & want to move up the career ladder. But using it as a starting point? I think that it would be very iffy.
The "therapies" (Physical, Speech, Occupational, Dance, Play, etc.) are all good career choices. Keep in mind that entry level is Masters Degree for some. With a Bachelor's degree, you can be an "assistant". There are fewer programs available, and (at least in my area) entry is just as competitive as nursing programs.
Have you also taken a look at Medical Lab Technology? Radiologic Technology? Respiratory Therapy? Those are all viable options also.
Best of Luck to you!