I hope you are successful to get rid of the stone. Here is a true story of someone who got rid of her stone.
That someone is my mother in law. She was diagnosed with a 1cm stone in her GB. She was really scared as the doctors were suggesting surgery. ( As calcified stones can be cause of cancer). But she was against surgery.
Anyways she joined a local yoga class, and learnt yoga poses for a month. Then she started doing those poses(asanas) at home every single day.
Just as follow up, she had another Ultrasound. She was scared that they will find the stone and push for surgery. Guess what.... the stone was gone in 2-3 months. She was elated. She said even if they have missed seeing the stone in US, she was happy as no one will push her for surgery.
She knew abt LFing from me, but I discouraged her to try it.
Yoga helped her or not, no one knows. But the fact is she is stone free now without flusing. There are certain poses which help in contracting the GB, spleen etc. So the yoga poses give a good exercise to our internal organs.