If the shock you have is the Cane Creek, adding low speed compression will stop pedal induced bobbing. I didn’t think the enduro suffered much from that myself.
I ditched my Cane Creek, didn’t manage to get it dialled in no matter what. Now have a monarch RC3 which really suits the Enduro.
If your bike came with spesh tires, you’ll struggle to get anything much lighter without going for xc race tires.
If your budget can stretch, get some chinese carbon rims. Makes 29ers much more lively in terms of acceleration/direction change.