Several techniques will naturally stop milk production, but to wean the baby, you'll first need to gradually reduce nursing sessions.
As for plants, sage has an anti-galactogenic effect, as do mint, artichoke, green cabbage, and parsley, commonly called "milk-stopper." Parsley can be taken as an infusion combined with sage, or with honey, or even as a poultice left to sit overnight on the chest.
What the science says: for children, breastfeeding, medicinal plants
What published research says about the remedies mentioned above, for context — the studies address material causes, while healing belongs to Allah.
For children
In infants, the probiotic Lactobacillus reuteri reduces colic-related crying according to a meta-analysis (Pediatrics, 2018) (Acta Paediatr, 2024); in children, honey soothes nighttime coughing (after age one) (Cochrane, 2018), fiber and hydration treat constipation (J Pediatr, 2022), and omega-3s are studied for hyperactivity (Neuropsychopharmacology, 2018). Precaution: never give honey before age one, no essential oils before age 3 (age 6 for mint), doses adapted to weight; any fever in an infant under 3 months is an emergency.
Breastfeeding
Fenugreek, fennel, and other traditional galactagogues have been evaluated by a Cochrane review and specialized journals: modest but real effects in some mothers, when nursing is frequent (Cochrane, 2020) (Ochsner J, 2016) (Biomed Res Int, 2014). Hydration, rest, barley (talbina), and dates support lactation. Precaution: check the compatibility of any plant or supplement with breastfeeding (mint and sage in high doses reduce milk supply); when in doubt, consult a lactation specialist.
Medicinal plants: using them properly
Moringa, for example, has shown an effect on blood glucose according to a meta-analysis (Molecules, 2021) and its safety has been reviewed (Phytother Res, 2015); more broadly, plants act — and therefore interact: the review of plants against anxiety (Pharmacol Res, 2022) or against painful periods (J Int Med Res, 2020) reminds us of this. Precaution: follow dosages, avoid mixing many plants, check compatibility with your treatments, pregnancy, or breastfeeding; buy quality plants from a verified source.