Remove function from shears

I am making a custom brush for something in a modpack. I want to remove the functionality of the shears right clicking and doing, well, shear things, but only whenever it is specifically my brush variant (which is shears with NBT tags of {display:{Name:'[{"text":"Brush","italic":false}]'}, CustomModelData:4831}. Such as shearing sheep/mooshrooom. I also want to remove whatever signifies that it will mine cobweb/leaves etc. Basically I just need a 'does nothing' version of the shears item.
I'm not sure if the above is possible, but if it is, how would I go about it?
If you want clarification on anything I said just ask.