"Working in to" is a phrase that can have many different meanings depending on the context in which it is used. For some, it may refer to the act of gradually becoming part of something. For others, it may refer to the process of completing a task or project. Whatever the context, there are many synonyms that can be used in place of "working in to" to convey a similar meaning. Some examples include "integrating into," "assimilating into," "becoming a part of," "gaining entry into," "penetrating," "achieving access to," "attaining inclusion in," among others. Using synonyms can help make your writing more interesting and engaging, and can also help to clarify your intended meaning to your readers.