it's kind of amusing the he does things in the wrong order , not even considering how long it will take even if he succeeds the tree will loose its potency the longer it sits there he should have done some expearemrintauon using the ruins first have them all set up beforehand
I think the element crystals will help heal and grow the tree an make a more pure fruit also pretty sure it need to be earth crystals cause the fruit needs to be a constitution potion an maybe a water crystal for the next tree to create a acid fruit?
having less should diminish the effect aswell as the side effect. I reckon he will have to remake a stronger consciousness but one without memories to lessen the side effect but strengthen the main