I've been messing with double dash 1 fb epogo and Ive found it way easier to do 2 fbs instead of just 1.
The inputs arent super presice and there is a lot of wiggle room.
If you are taking dmg as you are pogoing the spore you can try to dash closer to the ceiling and/or moving forward after pogoing to get further. If you detonate the spore after bouncing in the mushroom try delaying the second nail slash in the set up a bit less or try pogoing the bouncy mushroom a little later.
The height of the last dash can also be slightly modified as well as adjusting/removing the small delay inbetween the nail slashes in the setup if your having problems with it in general.
Also, I recommend putting yourself against the wall of the block at the beginning and letting go of any directional input until after the 3rd dash and letting go of them again after the 1st fb unless you are missing the sporg of getting hit by the explosion as mentiones earlier.
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