Where are the side branches? That is one strange looking plant.It looks like it is getting close , but give it a week or so.It will get fatter.How long did you veg it? For as small as that plant is. You could of done an autoflower and got more bud in less time.Your post claims it is 3 month old. most autoflowers are done in 9 weeks or 63-70 days . What for light did you use?This plant is a good start, but i would try to learn so next plant will be 5 times that size. But not bad for a beginner.