Femara

I just finished my first cycle of femara. Progesterone was 7.53 on cycle day 20. Based on what I’ve read that means I ovulated but my Dr said it’s low and is increasing my dose. Does anyone know the goal progesterone level on femara? I am not doing IUI or being monitored by anything other than progesterone level cycle day 20-22. Seems rogue based on what I’ve read on here.