Natural science is organized into physical science and life science, i.e. physics, chemistry, biology..... Social science tried to copy this way by developing economics, political science, sociology... But what works in nature world doesn't work in society. Human is more complicated. For example, It is hard to understand politics without understanding economics. It's hard to understand economics without understand animal spirit (psychology).
Social science should use issue-oriented approach to organize its knowledge. Target the social issues, not the discipline. Just like Hayek did, for example. It is hard to classify Hayek as an economist or a philosopher/thinker or a political scientist. He certainly made contributions to all of them. But actually he spent whole of his life only on one issue - freedom. All knowledge he developed, economics, political philosophy, is around this issue. Social science should follow Hayek, change their current disciplines to issue-specific departments, e.g. department of freedom, department of equality, department of poverty....that is, targeting the real issue.