The Wim Hof Method® will yield results from the first breathing practice. Cold tolerance is also something that happens within days. There are studies that show brain changes after 8 weeks of meditation, so this one will happen a bit slower.
The movement part is also going to take longer. Improvements in skills will happen fast if the only thing you need is to create the connection in your mind, like learning a new throwing technique. But if you need to condition the skin in your hands in order to hang longer, or develop more strength, then we are talking about months. The slowest part is correcting posture or increasing mobility. It has taken me 6 years to regain mobility in my ankles and I still have a long way to go.
But because the systems I work with are designed to meet you at your level you will still be experiencing improvements weekly, like feeling more stable after practicing a jump technique or being able to crawl longer after a week of practice.