diff --git a/beacon_chain/beacon_node_light_client.nim b/beacon_chain/beacon_node_light_client.nim
index 6b2c47743..d66f78889 100644
--- a/beacon_chain/beacon_node_light_client.nim
+++ b/beacon_chain/beacon_node_light_client.nim
@@ -52,9 +52,15 @@ proc initLightClient*(
     optimisticProcessor = initOptimisticProcessor(
       getBeaconTime, optimisticHandler)
 
+    shouldInhibitSync = func(): bool =
+      if node.syncManager != nil:
+        not node.syncManager.inProgress  # No LC sync needed if DAG is in sync
+      else:
+        false
     lightClient = createLightClient(
       node.network, rng, config, cfg, forkDigests, getBeaconTime,
-      genesis_validators_root, LightClientFinalizationMode.Strict)
+      genesis_validators_root, LightClientFinalizationMode.Strict,
+      shouldInhibitSync = shouldInhibitSync)
 
   if config.syncLightClient:
     proc onOptimisticHeader(
diff --git a/beacon_chain/light_client.nim b/beacon_chain/light_client.nim
index a8ffe0a23..94b9a3dbe 100644
--- a/beacon_chain/light_client.nim
+++ b/beacon_chain/light_client.nim
@@ -86,7 +86,8 @@ proc createLightClient(
     getBeaconTime: GetBeaconTimeFn,
     genesis_validators_root: Eth2Digest,
     finalizationMode: LightClientFinalizationMode,
-    strictVerification = false
+    strictVerification = false,
+    shouldInhibitSync: light_client_manager.GetBoolCallback = nil
 ): LightClient =
   let lightClient = LightClient(
     network: network,
@@ -177,7 +178,8 @@ proc createLightClient(
     lightClient.network, rng, getTrustedBlockRoot,
     bootstrapVerifier, updateVerifier, finalityVerifier, optimisticVerifier,
     isLightClientStoreInitialized, isNextSyncCommitteeKnown,
-    getFinalizedPeriod, getOptimisticPeriod, getBeaconTime)
+    getFinalizedPeriod, getOptimisticPeriod, getBeaconTime,
+    shouldInhibitSync = shouldInhibitSync)
 
   lightClient.gossipState = {}
 
@@ -191,13 +193,15 @@ proc createLightClient*(
     forkDigests: ref ForkDigests,
     getBeaconTime: GetBeaconTimeFn,
     genesis_validators_root: Eth2Digest,
-    finalizationMode: LightClientFinalizationMode
+    finalizationMode: LightClientFinalizationMode,
+    shouldInhibitSync: light_client_manager.GetBoolCallback = nil
 ): LightClient =
   createLightClient(
     network, rng,
     config.dumpEnabled, config.dumpDirInvalid, config.dumpDirIncoming,
     cfg, forkDigests, getBeaconTime, genesis_validators_root, finalizationMode,
-    strictVerification = config.strictVerification)
+    strictVerification = config.strictVerification,
+    shouldInhibitSync = shouldInhibitSync)
 
 proc createLightClient*(
     network: Eth2Node,
@@ -207,12 +211,14 @@ proc createLightClient*(
     forkDigests: ref ForkDigests,
     getBeaconTime: GetBeaconTimeFn,
     genesis_validators_root: Eth2Digest,
-    finalizationMode: LightClientFinalizationMode
+    finalizationMode: LightClientFinalizationMode,
+    shouldInhibitSync: light_client_manager.GetBoolCallback = nil
 ): LightClient =
   createLightClient(
     network, rng,
     dumpEnabled = false, dumpDirInvalid = ".", dumpDirIncoming = ".",
-    cfg, forkDigests, getBeaconTime, genesis_validators_root, finalizationMode)
+    cfg, forkDigests, getBeaconTime, genesis_validators_root, finalizationMode,
+    shouldInhibitSync = shouldInhibitSync)
 
 proc start*(lightClient: LightClient) =
   notice "Starting light client",
diff --git a/beacon_chain/sync/light_client_manager.nim b/beacon_chain/sync/light_client_manager.nim
index e42b0f27f..30837b35f 100644
--- a/beacon_chain/sync/light_client_manager.nim
+++ b/beacon_chain/sync/light_client_manager.nim
@@ -65,6 +65,7 @@ type
     getFinalizedPeriod: GetSyncCommitteePeriodCallback
     getOptimisticPeriod: GetSyncCommitteePeriodCallback
     getBeaconTime: GetBeaconTimeFn
+    shouldInhibitSync: GetBoolCallback
     loopFuture: Future[void].Raising([CancelledError])
 
 func init*(
@@ -80,7 +81,8 @@ func init*(
     isNextSyncCommitteeKnown: GetBoolCallback,
     getFinalizedPeriod: GetSyncCommitteePeriodCallback,
     getOptimisticPeriod: GetSyncCommitteePeriodCallback,
-    getBeaconTime: GetBeaconTimeFn
+    getBeaconTime: GetBeaconTimeFn,
+    shouldInhibitSync: GetBoolCallback = nil
 ): LightClientManager =
   ## Initialize light client manager.
   LightClientManager(
@@ -95,8 +97,8 @@ func init*(
     isNextSyncCommitteeKnown: isNextSyncCommitteeKnown,
     getFinalizedPeriod: getFinalizedPeriod,
     getOptimisticPeriod: getOptimisticPeriod,
-    getBeaconTime: getBeaconTime
-  )
+    getBeaconTime: getBeaconTime,
+    shouldInhibitSync: shouldInhibitSync)
 
 proc isGossipSupported*(
     self: LightClientManager,
@@ -335,6 +337,7 @@ proc loop(self: LightClientManager) {.async: (raises: [CancelledError]).} =
     # Periodically wake and check for changes
     let wallTime = self.getBeaconTime()
     if wallTime < nextSyncTaskTime or
+        (self.shouldInhibitSync != nil and self.shouldInhibitSync()) or
         self.network.peerPool.lenAvailable < 1:
       await sleepAsync(chronos.seconds(2))
       continue