Take an inventory of our skills and compare them to job listings above. You'll recognize that you've likely performed some of the tasks just desribed diferently.
Keep a spreadsheet of information and interactions with organizations. Have an ideal (but realistic) timeline for your transition and work backwards.
Seek out professionals in the field you're looking to enter how they got to their roles. It's okay to ask for advice, but have a real interest in them and the work they're doing.
Stories matter, but so do numbers. Show your potential to scale your work and demonstrate results. Indicate how many you've served and your impact.