First time testing for ovulation

I have 2 kiddos. Both double rainbow babies🌈🌈

When we had started trying I knew my body pretty well to just try without testing but I did use a TTC app. With the first 2 pregnancies they both ended in miscarriage and when we didn't focus on trying and BAM‼️ a healthy baby boy💙 then 2 years later same thing happen we were actively trying and both ended in miscarriage then when we stopped trying BAM‼️ a healthy baby girl! Well we have decided to try for a 3rd baby 🥰 so this is my first time using ovulation tests. I took my first one the day before glow predicted my fertile days to start. It seems to be gradually getting darker. And I supposed to do 2 in a day🤔 cause I noticed when I did one early morning it was light and darker by that night. Any advise would be great 🥰🥰 baby dust to everyone who is trying 💗💗💗