Frequency and duration of language lessons.
The best recurrence for the lessons, according to my experience, is 2-3 times a week:
- enough time for your brain to process and connect new data,
- 2-3 nights of sleep to commit the material to the long-term memory;
- such continuity prevents forgetting and fragmentation of knowledge.
A double academic hour meetings will allow for deeper language immersion, and can save you time.
An "academic hour" is defined as 50 minutes. A double-hour lesson will last 1 hour and 45 minutes, including a 5-minute rest break, which is a perfect duration for maintaining deep concentration.