If you haven't worked in the healthcare setting before writing notes, then there definitely are growing pains. I needed a few months of training before I felt ready to be released as an independent scribe, and eventually became a chief scribe and helped people work through the same adjustments. Starting out, you can write a list to have nearby of what to include: chief complaint including time/date of onset, progressive symptoms, modifying factors (what makes x symptom better or worse), descriptors like severity and whether they took medication, pertinent negatives, significant social factors possibly at hand, at the very end drug allergies or current medications, etc. That way you can sort of mentally check them off. I would say the most difficult part is learning to filter what is pertinent in the patient's story to add to the note and what is not necessary. Everything should relate back to the CHIEF complaint.
The good news is that medicine speaks a similar language throughout disciplines. These skills will be easily translatable to working as an EMT/paramedic, PA/NP, or physician. Once you hone in on these skills, you develop that mind for medicine (or at least what the insurance companies want in a note for full reimbursement). It just takes practice, practice, practice at the beginning, but once you develop some skill and confidence in it, it can become cakewalk as you develop an intuition for routine appointments.