The structure I was taught to use for Methods in Context and Theory and Methods was PERVERT. Regarding the difference between Theory and Methods and Methods in Context, the question on Methods in Context will be testing your knowledge on research design and methods. Whereas Theory and Methods will be testing you on the sociological perspectives: Functionalism, Marxism, Social Action Theories etc and debates in Sociology, such as Positivism vs Interpretivism, Sociology as a science etc. You're correct as Methods in Context is part of Paper 1, and Theory and Methods is in Paper 3.
Hope this was somewhat helpful haha ^^