I use AN Jungle Juice, and find it a very good, affordable product. I did find that it does not give enough micros, especially in bloom stage. I bought some GO Microblast and add 1 ml/L every other time. Fixed some problems I was having with boron def about midbloom. When I started out with the AN, I was just going with the so many ml/L or 1/2 strength, etc. I found that my grows would always go quite abit longer than what most other peoples grows took. I started using my ppm pen and started mixing my nutes according to ppm instead of 1/2x or so many ml/L. I found that when using the ml/L method, I was mixing alot hotter than what I thought. After changing to ppm method, my grows seem to have shortened up a bit and I use less nutes. Just an observation, don't know if it holds water. You can get great results with the Jungle Juice, Microblast, B52, Big Bud and Overdrive. I also use Carboload and Rhino Skin, but have had great results without them. I also use the soil microbe sups VooDoo and Piranha, both well worth the investment, I would not grow without some type of soil microbe sup. I think it makes all the differance.
50 days and no more buds than what you have, I would just leave on 12/12 until she decides to pop.