I did PMHNP not FNP and the classes were reasonable, sustainable workloads, IMO. I had toddlers, worked baylor, and did it okay. I am not one with a ton of bounding energy.
However - if you are the online type of program, they (at least used to) make you find your own clinicals. their idea of "helping" which they pitch so hard in the beginning, they will assist, blah blah.....was telling me to look in the yellow pages. Even going to live in Ohio and using their brick&mortar preceptors was declined. "Those are for our live students."
Start looking for a preceptor YESTERDAY! Start the paperwork for the chosen ONES (pick more than one person in case an emergency arises) and at least 6 months ahead of the first clinical class. If the school decides that your preceptor is just a contract (2-3 days approval) or a lengthy, lawyer-ridden "agreement" that can take 6 or more months. It is not easy to find a preceptor on your own.
I was working 3 RN jobs and on good terms with old ones. I had made probably a hundred inquiries of failure and was in the process of meeting military recruiters just to get a preceptor, when I finally found an angel to do mine.
Do not assume your current job will allow you to precept either, I made that mistake as well. The doctors who were so friendly in work basically told me where to go when I suggested following them. I even tried to offer compensation, still NADA.
In spite of the clinicals drama, and the price of the education, I am glad that I did it through them and online. B&M school in our state was one program 3 hours away one way and that wasn't happening, ever, at all.