You haven't mentioned birth weight of the baby. Because from day 10 of life baby should be gaining around 30-35 gram per day till 3 months of age. So, your baby should be weighing about 1.7 to 2kg more than her birth weight by now. Usually one breast produces more milk than the other. So if one appears heavier than the other, no need to worry. Sometimes when baby has preference towards right breast, left breast may produce less milk. So feed alternative breast at every feed atleast for 25-30 mins so that baby gets the hindmilk as well. Then switch to other breast if baby needs more milk.  You may note down in a diary if you tend to forget which side you have fed last. Milk production increases mainly by the demand of the baby. More the baby suckles at the breast and more emptier the breasts get, more milk is produced. Vice-versa if at the end of feed breast still feels heavy, then automatically breast will produce less milk at next feed time. Take atleast 3-4 litres of water everyday. Eat balanced nutritious diet. If breasts are getting engorged and painful, you may stop the lactating granules. You may give a gentle massage and warm compress to the engorged breast and feed the baby. You may give gentle compressions in between during feedibg so that little milk is left behind. If breast still feels heavy after feed, express the remaining milk and give a cold compress. If you see a hard painful area over breast like mastitis, see a doctor.