Changing careers at 8 years into a job, is it realistic? - 20 weeks in

I want to move from accounts payable clerk to something with more stability. I am in Memphis, in case local advice matters. I have a little time and a small budget for training. Has anyone made a similar move?

I began with informational chats, then a short online course, then a related entry-level role. It took about 12 months.