There are several synonyms that can be used instead of the phrase "more scantily." Some options include "barely," "minimally," "sparsely," "scarcely," and "meagerly." Each word conveys a sense of little or limited coverage, making it an effective replacement for "more scantily." Depending on the context, other synonyms such as "skimpily" or "scant" may also be appropriate. Ultimately, the word choice will depend on the specific tone and emphasis desired in the given sentence. Regardless of the synonym chosen, they all effectively convey a sense of scant or minimal coverage.