Id move it to at least a 3 gallon, you will probobly get larger buds. Some will say the pot size isnt that important, the nutrients are most important, I think the ammount of space you give it has to play a big part, ive noticed this with my indoor opps, as ive played with different sized pots.
rule of thumb = 1 gallon for each foot. if you grow in a smaller pot you will just get smaller buds/yield and the plant wont be quite as healthy.. a 3' plant in a 3gallon pot will be a lot more robust, stronger stem etc.