Answer: Hii. From about two to three weeks of age, your baby will probably gain about 120-240 grams (four to eight ounces) per week until his or her birth weight doubles, usually by four to six months. In the first few days after birth, babies normally lose weight, then get back to their birth weight by about 10 days. In the first three months, a baby should gain, on average, 140 to 210 grams (five to 7½ ounces) per week. Between three and six months of age, the average rate of baby weight gain slows down to between 105 and 147 grams (four to five ounces) per week. breastfed babies grow more quickly in the first four to six months, and then slow down, while formula-fed babies grow more slowly at first and then gain weight faster, • Between six and 12 months, the average growth rate is 70 to 91 grams (2½ to three ounces) per week. • On average, babies double their birth weight by four or five months, and triple it by a year. parents should be aware that a baby’s birth weight depends more on the mother’s diet and health during pregnancy, than on genetics. improving baby while baby is on breastfeeding sharing u the ways: 1) Sleep close to baby. this increase prolactin and frequency of nursing. 2) Do baby massage. That improve baby digestion and helps weight gain. 3) carry baby through out the day in baby carrier get as much skin to skin as u can. 4) nurse atleast after two hours and atleast once at night. 5) make sure u allowed baby to completely finish one side before offering another one. 6) always offer second side even if he seems to be uninterested. 7) do massage of breast before offering milk so that a proper flow of milk can be received by baby. If u find above advise useful plz press like button. All the best.