It depends on where you're starting, which areas of your accent need work, your goals, and how consistently you practice between sessions.
With one 60-minute coaching session per week and daily or almost-daily practice, here's what you can typically expect:
After 3 months: You'll have a strong foundation in American English pronunciation. You'll understand how the sounds are produced, know which sounds you need to work on, and have developed the ability to produce most of them more accurately in individual words and phrases. However, you may not consistently use all of these sounds in spontaneous conversation just yet.
After 6 months: You'll have had considerably more time to apply what you've learned to actual speech. We'll spend more time speaking together, and I'll correct your pronunciation in real time to help you use your newly acquired sounds more consistently in everyday conversations, meetings, and other professional situations.
After 1–2 years: If your goal is to get as close to a native American accent as possible, you can continue refining your pronunciation beyond the initial six months. This involves improving consistency, addressing smaller pronunciation details, and making your American accent sound increasingly natural across different speaking situations.
You don't necessarily need one to two years of coaching to make meaningful progress. Many clients can accomplish a great deal in just three to six months. Continuing beyond that is entirely optional and depends on how close to a native American accent you want to get.
Ultimately, my goal is to give you the knowledge, practical skills, and personalized feedback to improve your pronunciation as efficiently as possible, so you can continue building on what you've learned even after your coaching program ends.