Hi, do you feel any hardness in your breast? Any possibility of blocked ducts?
you will not be able to pump out milk if there are blocked ducts. I ever experienced my milk dropped very drastically also. Need to roll your nipples and use hand to clear the blocks and express by hand instead.
It is very effective to let baby suckle and hand express. Will clear the blockages.
Get help from NUH LC urgently. Try fenugreek to boost your supply in the meantime.
By the way, 700ml is very very good. I am currently bf my 9 mths child and I only have this much at this moment.
Do supplement your child with formula at this moment. Once your problem is solved, you can revert back to breastmilk. dont't give up!