The phrase "be getting along" means to be making progress or advancing towards something. There are several synonyms for this phrase that can be used interchangeably. Some of these words include improving, progressing, making headway, advancing, moving ahead, making strides, and gaining ground. Each of these words represents the idea of moving forward and achieving some kind of progress. They can be used in a variety of contexts such as in education, career, or personal relationships. No matter which synonym is used, the idea remains the same, which is to indicate that some kind of advancement or progress is being made.