i already have my multi tool made, but i made it so its actually a pickaxe but i set effective on to a whole bunch of blocks, but theni have tu manually add all the wood types of stairs, doors fences etc. is there a way around this to make it just work as a pickaxe, axe and shovel?

Depending on how you want to implement such behavior, there are multiple ways of doing so.

One example can be found here (not so well written in my opinion but is the best I could find) :

https://github.com/Ellpeck/ActuallyAdditions/blob/master/src/main/java/de/ellpeck/actuallyadditions/mod/items/ItemAllToolAA.java.