I would give the berries one more year in those large pots but be sure to fertilize with a slow release but complete plant food like Osmocote in the spring. You should also add a compost mulch or manure mulch to the berries at the first sign of new growth. If you don't have near to normal harvest this summer then throw in the trowel, get rid of those plants, start with fresh soil and plant your whiskey barrels with fresh plants next spring. Keep growing, Marianne Binetti