FSR will require 24 hours every code cycle or about 8 hours of approved training per year. The trick is to determine what training will be recognized. The local BCSA inspectors have regular Teck talks which offer free 2 hour sessions once a month on varying subjects as 1 source for these credits. A 2 day Arc Flash seminar would get you 16 hours in 1 shot.
I can see there could be a challenge for some FSR to get the 24 hours especially once they have waded through 1 or 2 upgrade courses.