need help for order of the grooks (EARTH) quest

pls send help......

idk if its just me or the first class for earth element in order of the grooks quest is EXTREMELY HARD.

i tried to right click the infested blocks on the rock with the tome many times, to be accurate i reran that particular class about 10 times :)))))) and i always fail because there's not enough time and the fact that i have to click 5 times for 1 block to be removed isnt helping the overall situation......

am i doing it wrongly or is there any other easier way to get thru this.... i tried to /kill and wanted to re-choose my class but it doesnt seem to work :))))

pls help crying

 

UPDATE I DID IT!!!!!!!!!!!!!!!!!!!!!!!! OMG still crying but YES thanks!

 

I'm so proud (do water next time, it's just a funny quiz!)

 

Or air. Its just a simple parkour...

 

I like the quiz because it takes probably 20s at most and I don't have to do anything except push a button