Can massage reduce milk supply?
Generally, massage cannot directly suppress lactation; on the contrary, it may stimulate milk production. However, using proper lactation-suppressing massage techniques in combination with other weaning measures can help alleviate discomfort caused by breast engorgement. The details are as follows:

If squeezing or forcefully clearing the mammary ducts during massage, this stimulates the nipples and breast tissue, increasing prolactin secretion, which leads to enhanced milk production. This not only fails to suppress lactation but may also worsen breast engorgement and prolong the weaning process. Such incorrect massage methods should be avoided.
To assist weaning through massage, gentle, soothing techniques should be used. For example, gently massaging the breasts in a clockwise direction with the palm, or softly combing from the base of the breast toward the nipple with fingers. The goal is to relieve pain, swelling, and lumps caused by engorgement and promote gradual reabsorption of accumulated milk, rather than stimulating milk flow. This type of massage should be combined with other weaning strategies—such as reducing breastfeeding frequency and avoiding soups and fluids—to achieve an effective supportive effect.
During weaning, natural methods are recommended: gradually reduce the frequency and duration of breastfeeding, limit intake of high-protein and soup-based foods, and avoid stimulating the breasts. If engorgement is severe, a breast pump may be used to remove a small amount of milk to relieve discomfort, but the breasts should not be fully emptied.