Stair Stepping Method

So I went to my fertility specialist this morning (day 12) and it looks like the follicle they saw on my overy on Thursday (day 10) hadn't changed. He says I have slow overies that take their time. I had taken Serophene from days 3-8. I go back on day 15 to see if anything has progressed. If not, I'm going to go back on Serophene (stronger dose) again. I read online that this is called Stair Stepping. Has anyone done this?