Thank you for your question and it’s great that you are monitoring the urine output too along with the weight.
Generally we advise exclusive breastfeed till six months but in some cases mother’s milk becomes insufficient according to baby’s demand or milk production reduced. I suspect your case is also going on the same way and so you can start some complimentary food along with.
Next Steps
Online consultation in case of detailed insight
Health Tips
Start some complimentary food and increase your diet so that milk production increases