Rather than digging the compost in, place it on top of the soil as a weed suppressing mulch.
The worms will slowly pull it down to feed the soil's ecosystem.
I add no more than 3cm of home made compost to my beds every year & at most, 40g/m³ of either blood, fish & bone, or Growmore.
Carrots are fine when the blooming carrot flies don't get t them & parsnips are 80% perfect, with the others between usable & multi forked horrors.