Getting FSH to rise following BCP

Hi Dr Sher,
You’ve written that for women launching COS coming off a BCP something needs to be done to cause a rise in FSH for 5-7 days to facilitate PAF to AF conversion. You suggest that this be done through GrRH Agonists.
But could this not be achieved through very small doses of Gonal-F for the 5-7 day period?