OPK question

Alicia • Mom to a 14 yo boy and 8 yo girl. One 👼🏻 11/2010.

I am on cycle day 6 which I know is early to start tracking. I have 26 day cycles. I went ahead and started bc last month I started the testing too late into the week. I will attach a picture of the OPK today, I know it’s negative. My question is how many times a day should I test? I have heard anywhere from 2-3 times. Thanks ladies!