Suggest Treatment For Constipation In Infants

Hi My seven months baby s suffering from constipation. She had ear infection in six months and took antibiotics. From then she s having constipation issues. Doctors advised to give fiber rich food. Tried everything. Giving enough water and breast feeding her. Nothing s working out. She s having bowel movement once in three days. Solid stools and crying like anything. Used glycerine suppository too few times. Pls guide