Well, it's very good to increase your running time/distance 10% every week.
But you always have to look how you feel after running. Once you come to 20minutes running, but it's not necessary to run 22 minutes next week. Maybe keep running 20 minutes for 2 weeks. Always listen to your body.
How many times do you run a week? It's good to run 3-4 times, not more. Do this until you want to run in a race