Its nothing, as baby’s height is also growing so weight can be reduced, just focus on complementary feed, to gain weight as at 1 yrs of age weight should be 9-11 kg, so just focus on giving homemade foods, if child is active, alert, not getting sick, or no other abnormality detected then no worries, just focus on diet and do weight monitoring
Next Steps
Physical consultation is better for weight and height and plotting on growth charts, its better to do monitoring on growth charts, so any other abnormality could find out