Synonyms for "in small quantities" can vary depending on the context. It could be described as "sparingly," "in moderation," "scantily," or "infrequently." Other possible synonyms include "meagerly," "lightly," "sparsely," "in dribs and drabs," "infrequently," or "occasionally." These words can be used to describe the consumption of food, the usage of resources, or the distribution of goods. When one needs to convey the idea of doing something gradually, words like "gradually," "bit by bit," or "slowly but surely" can be used. In conclusion, using synonyms can greatly enhance a writer's vocabulary and make their message more impactful.