What is working for me these days is a calendar that I print out. I print about 6 at a time and staple them together. I have a code, which for my daughter usually means TC for tonic clonic. I put the time, I put the length of the seizure. I lay a band of green over the event with colored pencil.
For the days she is on her period, I use a red pencil and lay lines over the dates. I write anything that is different during this time in the margins of the calendar.
She uses bio-identical progesterone so I put a dot when she is using it morning and night. It helps me to see if there are days that she forgets to use it.
I write at the bottom of the month what vitamins and minerals she is taking. I make a note of any increases or decreases that occur. On the days that she forgets to take morning or night supplements, I make a good attempt to make note when these were forgotten. There are somenights she falls asleep before she takes them. Occasionally I will wake her,and I think that when she has had good control, nothing we are doing has been forgotten or left out.
I make notes of emotional meltdowns. I note good days, food infractions (since she is on a strict neutritional plan). Of course I am not 100% reliable on making my notes, but it sure does help me to see areas that we might improve.
I hope that helps you to understand how I do it. Ask questions if I wasn't clear.