When to take OPKs?

Ashtyn

My cycle is irregular but has been 40-45 days the past 3 times I have had it since stopping the pill. I bought 10 OPKs and am wondering if I take them every other day if that will be enough or do I need to take them daily? I am planning to start two weeks past my last AF and do every other day until I see I ovulate. Just wondering what other experiences you ladies may have had and if you have any advice/recommendations for what works best! Thanks