My daughter she is 9 months 20 days old her weight is 6.34kgs nw and her birth weight is 3.17kgs she is active also but not having food properly what should I do for her weight gain

A. hi might be teething phase or Mouth ulcers or indigestion problem. please check for this. if it is teething ,you need to give gentle massage on sore gums of your child. for that rub your pointer finger in circular motion on sore gums of your child. you may provide silicone teether too. I would suggest Babyhug silicone teether.