BBT testing/OPK help, first month tracking

Anon

Do you typically track BBT on your low days or do you usually just start tracking your BBT when you start testing high? I know the recommendation is to to test BBT the whole time but honestly seems like a bit of a waste right now until I start seeing my peak get closer. I should be about 4 days away from ovulation, this is my first month tracking it after being TTC for about a year unsuccessfully, really could use feedback/tips in this realm. Thanks!