Question about grubhub driver level. What is the minimum amount of blocks i need to work in a month to bring driver level up

Currently my driver level with grubhub is at the lowest level and I would like to bring it up. It says that if your attendance and acceptance rate is high enough for 30 days your level will go up. The problem is that it is hard for me to schedule blocks during times that are available to me with my schedule since I get my new blocks on Saturday. My question is if I literally schedule one block a week for 30 days is that enough to bring my driver level up. And if not what is the minimum amount of blocks I need to work in 30 days to bring my driver level up.