Letrozole question

Jennifer

Has anyone ever heard to taking letorzole 5mg starting cycle day 3 and taking it for 10 days? This cycle I took 2.5 mg cycle day 3-7 but when I had my follicle scan I only had 4 follicles on each side measuring around 12 and she said my body didn't respond to that dosage. Just curious if anyone has ever heard of the new dosage she is prescribing me?