You can have different options of course duration, from 20 to 40 lessons per week, with your host teacher (each session lasts 45 minutes). In addition, you would normally have one or two hours' work to prepare for the next day's lessons. The teacher will also organize excursions for you where relevant to the course.
Important!
You progress more when you are in a relaxed and hospitable atmosphere, together with native speakers of Russian. You can propose the starting dates for the courses (incl. Saturday and Sunday).
If you have a friend or a colleague whose standard of Russian and needs are similar to your own, you can ask him and if he agrees, you two can share the lessons for a considerably reduced cost. (Two-to-one courses).