First TTC ovulation week...help!!!

Okay ladies I’ve heard so many different things on here about opk’s. My fertile window starts tomorrow and I’ll be waiting for my surge so that I can schedule an IUI the next day. I’m super nervous about missing it!!! Any tips about when to test? I want to test twice a day and was told to test in the morning between 10-12. Any good tips for afternoon testing times? I’m using clearblue (the dye not the smiley faces) and easy@home.

Any advice would be great!!! I’m sure I’ll be posting a pic of my test for more advice when I think I’ve gotten my positive. 😊