Pictures of such a situation is often seen, buy when lush, home 2-3 years to become so. Gooseberry potted plants, potting soil nutrients are limited, and gooseberry density, high plant shape, how can the branches do not wither, not defoliation it. (Leaves also have a life expectancy, there will be normal leaf drop)

Suggest to change the potting soil, remove the weak plant, the strong plant short cut, let the plant lower sprouting branches, no longer bare legs.