There are so many things that can happen in life that sometimes language lessons have to be put on hold, you need more or less. No problem at all! All the purchased lessons are credit which only expires 12 months after purchase - plenty of time to get things settled and come back to class!
You also decide the learning pace! If you need more lessons you simply book more and if you want to decrease the intensity, just schedule less sessions. You can adapt your learning process to your time and circunstances!