You can opt for slow weaning which means you can decrease the number of feeds your child receives gradually over next 2weeks or so.
This will allow gradual reduction in milk production.
You can also opt for expressing a little milk using a breast pump or manually , just enough to relieve the engorged or heavy feeling. Gradually the milk production will subside.
For any pain or discomfort related to heavyness you can use pain meds or cold compression.
Next Steps
in case you have severe pain , hard , shiny lump or hot tender lumps
then you should consult a doctor.
Health Tips
whatever option you use understand it is a gradual process and slowly breast milk will subside.