this is my first grow and i've been going by this book called Marijuana Buds for less - grow 8 oz. of bud for less than $100. it was goin by the book until about 2 weeks in. the growth on this guys plants from day 9-15 is ridiculous. went from just gettin leaves to expanding the diameter of the 3 gallon pot. now im lost. the plants are about a month old now a bit over a foot tall. when do i switch to 12/12?