diff --git a/backend/src/controllers/doctor.controller.js b/backend/src/controllers/doctor.controller.js
index 717279d..5ea3048 100644
--- a/backend/src/controllers/doctor.controller.js
+++ b/backend/src/controllers/doctor.controller.js
@@ -365,6 +365,15 @@ export const updateDoctor = async (req, res) => {
 					globalSortOrder !== undefined ? Number(globalSortOrder) : undefined,
 			},
 		});
+		const existingDepartments = await prisma.doctorDepartment.findMany({
+			where: {
+				doctorId: doctor.id,
+			},
+			include: {
+				timing: true,
+			},
+		});
+
 		for (const dep of departments) {
 			const department = await prisma.department.findUnique({
 				where: {departmentId: dep.departmentId},
@@ -372,21 +381,56 @@ export const updateDoctor = async (req, res) => {
 
 			if (!department) continue;
 
-			const doctorDepartment = await prisma.doctorDepartment.create({
-				data: {
-					doctorId: doctor.id,
-					departmentId: department.id,
-					sortOrder: dep.sortOrder !== undefined ? Number(dep.sortOrder) : 0,
-				},
-			});
+			const existing = existingDepartments.find(
+				(d) => d.departmentId === department.id,
+			);
 
-			if (dep.timing) {
-				await prisma.doctorTiming.create({
+			const newSortOrder =
+				dep.sortOrder !== undefined ? Number(dep.sortOrder) : 0;
+
+			const isSameDepartment = existing && existing.sortOrder === newSortOrder;
+
+			const isSameTiming =
+				JSON.stringify(existing?.timing || {}) ===
+				JSON.stringify(dep.timing || {});
+
+			if (isSameDepartment && isSameTiming) {
+				continue;
+			}
+
+			let doctorDepartment = existing;
+
+			if (!existing) {
+				doctorDepartment = await prisma.doctorDepartment.create({
 					data: {
-						doctorDepartmentId: doctorDepartment.id,
-						...dep.timing,
+						doctorId: doctor.id,
+						departmentId: department.id,
+						sortOrder: newSortOrder,
 					},
 				});
+			} else if (existing.sortOrder !== newSortOrder) {
+				doctorDepartment = await prisma.doctorDepartment.update({
+					where: {id: existing.id},
+					data: {
+						sortOrder: newSortOrder,
+					},
+				});
+			}
+
+			if (dep.timing) {
+				if (existing?.timing) {
+					await prisma.doctorTiming.update({
+						where: {id: existing.timing.id},
+						data: dep.timing,
+					});
+				} else {
+					await prisma.doctorTiming.create({
+						data: {
+							doctorDepartmentId: doctorDepartment.id,
+							...dep.timing,
+						},
+					});
+				}
 			}
 		}
 		if (doctor.seoId) {