<s>[INST] My baby was 2.7 kg wen he was born. Now he is six weeks old and is 4 kgs. He is completely on breast feed. But at night times, i feel difficult to feed due to my back pain. Moreover it takes me 45 min for one feed. So can i give him formula feed or wat is the solution?? Is his weight gain normal?? [/INST] Thank you for the care in your baby. I would not recommend formula feed until at least 4 months if not 6 months. Then I would advise homemade foods mashed and fed with clean spoon and after washing hands thoroughly. The weight gain is good which means your feeding is enough. For the back pain I recommend you sit with back support and try avoiding sprain. At night, you can support yourself in semi reclining position and feed. Yes it is painful to be a good mother !!! I hope I made my self clear In case you decide to give formula NEVER give from bottle with nipple for the good of your child as bottle-feed is associated with many ill effects. Instead, give with cup and spoon. Take care and happy parenting. </s>