hey mummy, i had the same issue as you. i wore compression socks. it helped me to feel less uncomfortable, it went off eventually a week later. water intake should not drop when you’re still breastfeeding, i continued to take in fluids to ensure body remains hydrated. you can try local pharmacy to purchase the socks.
i used compression socks, got it from polyclinic pharmacy. initially used one that's bought from shopee but didnt seem to work. after wearing the pharmacy bought socks, almost no water retention after 2~3days