PCOD stems from harmonal imbalance, harmonal imbalance stems from unattended emotions and lack of actions or exercise. If these things are controlled retro saturn or mars will help you to overcome the problem rather than causing it. Plant more trees, keep yourself grounded, walk on green grass and eat Martian food. This might help majorly.

You have mentioned noon as the time, although becoming a sadhak is something so spiritual that if you already feel the pull towards it you must start by meditation and avoiding social interaction as far as it is considered seriously. If you put your energy into something with good intentions nothing will go wrong.

ShaniDev is your fear, discipline, justice, land, and Karma. You may be not very religious but it won’t affect your blessings from Shani dev on your Karma. Helping and serving others, being righteous, utterly honest is the very blessing from Shani dev. As you asked, there is “magic” involved in our very life because of planets and someone who has faced injustice himself all his life, surely does know how to justify your Karma. He may attend your prayers and answer them, but he will be more satisfied when you live a humble and dignified life. Don’t we want someone who is so simple and yet elegant in way he conducts himself even after having all the power! He is the only planet called as “Shanishwaraya” Ishwar one who is like God himself. The lord of Justice ensures that righteousness prevails, that is his real magic.