If a 15 year old boy whose 6 foot 2 inches tall takes female hormones could he possibly shrink down to 5 inches?

No, it is not possible for a 15-year-old boy who is 6 feet 2 inches tall to shrink down to 5 inches by taking female hormones. Hormonal therapy can cause some physical changes, such as breast growth and fat redistribution, but it cannot drastically alter someone's height. Additionally, taking female hormones without medical supervision can be dangerous and have serious side effects.