How many (Italki) lessons do you have a week on average?

Do you feel that it is a sufficient amount to make a breakthrough with your language learning?

What do you do in terms of developing your language acquisition and ability on days when you don't have a lesson?

How long on average do you study your target language each day? 

What does a daily study session look like for you?

I'm curious as I'm looking to make a breakthrough in Korean.