Peak OPK 😊 Short Surge?

Nəssä 💑

So today I got my peak on LH cheapie & clearblue digital (smiling face). I received my peak at 12 pm & by 6pm it was fading. Does that mean I missed my highest chance to baby dance?? Luckily I baby danced this morning and will again tonight but geesh! What a short surge! Why are some surges longer than others?