I am on the spider fingers exercise as well.
One thing I have been doing to break it up a little when I struggle is to do a little practice with just the right hand. I close my eyes, think of a string sequence, for example 2,4,5,6,3,1 and try to pluck each string in that sequence.
As well as adding a little variation, it's helping me find the various strings without having to look so much. That means I can focus more attention on the left hand and the finger positioning when I go back to the main exercise. It seems to be working for me as I can feel I am getting a bit better each day.
Hope that helps.