Isn't your baby telling you she has enough by not crying after every feed Btw how do you tell your baby urine not much? my baby girl is now 4 months and she is just 5 kgs, too.my problem is she drinks alot! but i train her to take FM already cos my supply is insufficient to meet her demands. her diaper is usually heavy by mid day when i change.
baby boys are usually bigger size mah. aiyo. my mother in law also like that. kept indicating BF baby is very small, blah blah blah.
you must be firm in what you want . dont b discouraged. i was like you also. no support at home except my husband.
outdoor work - you got chance to express milk or not? if not, build your supply now in the freezer while you train your baby to take FM..