Add period information to health app iPhone

Hi, I'm trying to add information to the health app in the menstruation part of reproductive health. I'd like to know if there is an easier way to insert the info, as I can only use the "rolling date" system, and it makes it very hard to insert info thats a couple months old. Sometimes it rolls too far and sometimes you don't "roll" it enough. Can you just "type" the info in somehow instead of "rolling"? OR can I import data from a file such as a Numbers table or so?

Thanks for your time?