You only have 21 days to Lodge an appeal from magistrates court once convicted. With a 2 year ban, you were probably caught with a reading of 90-119 and the guidance to magistrates for this is 23-28 months so they could have given you one month less, but it could have been 4 months more.
Even if you are in the 21 day window, you need to understand that in an appeal, the sentence can be decreased OR increased!