Adding compost to raised bed in spring - but fall planted spring veg growing now!

Hello!  I'm a gardener in the states, zone 7a - but I am relatively new to vegetable gardening.  I've learned most of what I know from the gang at Gardeners World!  I have a 4'x12' raised bed for my veg that we built last year.  I planted veg in fall for the early spring harvest (Brussels sprouts, carrots, kale, celery, tatsoi, bok choi, etc.) - and all have already begun to show new growth!  But, my soil level in the raised bed is low... too low in my opinion, and I want to add compost to the entire bed.  However, what I should do about the veg growing in there now?  Should I try to lift them to the new soil level as I add compost?  Do I only try to add compost to the areas that aren't currently growing? Should I leave well enough alone?  I hope the experienced gardeners here can lend me some advice.  Thank you!  Happy Spring!  ~Mary from Maryland