Just put the left index finger on the first fret of the three triplets and the right index and middle finger on the other two (Green, Blue-Yellow, and Red Orange-Blue and Yellow, Orange-Blue). Put 50% speed and learn how the triplet is, when you do at least 98%, due to errors you could perfectly avoid, raise the speed until you get to the real thing.
That is the most difficult part of the solo but after a bit you'll eventually learn how to do it.
THEN, after that there is a Green-Red-Yellow scale that I like to get like this: after you've done the first three triplets, you'll have 2 seconds to adjust your fingers like this:
-Green:Left middle finger
-Red: left Index
-Yellow: right index
-Blue: right middle finger
-Orange: right ringfinger
It's a simple passage, you already have your left index finger on the yellow fret and the right index and mfinger on the blue/orange buttons: just slide them of one fret and put down another finger and you're good to go for the other part. Once is done, there are another three triplets, use the first method and for the last part put you're fingers like I said, after a while you should get 100%