A loose ring is one of those quiet metrics that reports before the scale has a dramatic week. For newcomers: a ring is a low-resolution scale with better UX. Hands are mostly bone and joints, so jewelry tends to show change before waistbands do.
Mine went from snug to doing a full spin while drying dishes, around 18 pounds down; a plastic sizer has been a cheap two-week experiment before committing to metalwork. The useful signals are simple: rotates on its own, slides over the knuckle without soap, or swings between tight in heat and loose in cold.
Too loose means it can leave without permission.
Still snug in the morning may just need patience. Anyone else using the jewelry box as a secondary dashboard?