diff --git a/services/surfaceflinger/Scheduler/RefreshRateConfigs.h b/services/surfaceflinger/Scheduler/RefreshRateConfigs.h
index 1aa6ade..5874066 100644
--- a/services/surfaceflinger/Scheduler/RefreshRateConfigs.h
+++ b/services/surfaceflinger/Scheduler/RefreshRateConfigs.h
@@ -51,13 +51,7 @@
 
     // TODO(b/122916473): Get this information from configs prepared by vendors, instead of
     // baking them in.
-    explicit RefreshRateConfigs(
-            const std::vector<std::shared_ptr<const HWC2::Display::Config>>& configs) {
-        init(configs);
-    }
-    ~RefreshRateConfigs() = default;
-
-    const std::map<RefreshRateType, std::shared_ptr<RefreshRate>>& getRefreshRates() {
+    const std::map<RefreshRateType, std::shared_ptr<RefreshRate>>& getRefreshRates() const {
         return mRefreshRates;
     }
     std::shared_ptr<RefreshRate> getRefreshRate(RefreshRateType type) {
@@ -68,8 +62,9 @@
         return nullptr;
     }
 
-private:
-    void init(const std::vector<std::shared_ptr<const HWC2::Display::Config>>& configs) {
+    void populate(const std::vector<std::shared_ptr<const HWC2::Display::Config>>& configs) {
+        mRefreshRates.clear();
+
         // This is the rate that HWC encapsulates right now when the device is in DOZE mode.
         mRefreshRates.emplace(RefreshRateType::POWER_SAVING,
                               std::make_shared<RefreshRate>(
@@ -120,6 +115,7 @@
         }
     }
 
+private:
     std::map<RefreshRateType, std::shared_ptr<RefreshRate>> mRefreshRates;
 };
 
diff --git a/services/surfaceflinger/Scheduler/RefreshRateStats.h b/services/surfaceflinger/Scheduler/RefreshRateStats.h
index ff63faf..7e7c630 100644
--- a/services/surfaceflinger/Scheduler/RefreshRateStats.h
+++ b/services/surfaceflinger/Scheduler/RefreshRateStats.h
@@ -41,12 +41,8 @@
     static constexpr int64_t MS_PER_DAY = 24 * MS_PER_HOUR;
 
 public:
-    explicit RefreshRateStats(const std::shared_ptr<RefreshRateConfigs>& refreshRateConfigs,
-                              const std::shared_ptr<TimeStats>& timeStats)
-          : mRefreshRateConfigs(refreshRateConfigs),
-            mTimeStats(timeStats),
-            mPreviousRecordedTime(systemTime()) {}
-    ~RefreshRateStats() = default;
+    RefreshRateStats(const RefreshRateConfigs& refreshRateConfigs, TimeStats& timeStats)
+          : mRefreshRateConfigs(refreshRateConfigs), mTimeStats(timeStats) {}
 
     // Sets power mode. We only collect the information when the power mode is not
     // HWC_POWER_MODE_NORMAL. When power mode is HWC_POWER_MODE_NORMAL, we collect the stats based
@@ -83,7 +79,7 @@
         flushTime();
 
         std::unordered_map<std::string, int64_t> totalTime;
-        for (auto [type, config] : mRefreshRateConfigs->getRefreshRates()) {
+        for (const auto& [type, config] : mRefreshRateConfigs.getRefreshRates()) {
             int64_t totalTimeForConfig = 0;
             if (!config) {
                 continue;
@@ -98,11 +94,11 @@
 
     // Traverses through the map of config modes and returns how long they've been running in easy
     // to read format.
-    std::string doDump() {
+    std::string doDump() const {
         std::ostringstream stream;
         stream << "+  Refresh rate: running time in seconds\n";
-        for (auto stats : getTotalTimes()) {
-            stream << stats.first.c_str() << ": " << getDateFormatFromMs(stats.second) << "\n";
+        for (const auto& [name, time] : const_cast<RefreshRateStats*>(this)->getTotalTimes()) {
+            stream << name << ": " << getDateFormatFromMs(time) << '\n';
         }
         return stream.str();
     }
@@ -126,12 +122,12 @@
         mPreviousRecordedTime = currentTime;
 
         mConfigModesTotalTime[mode] += timeElapsedMs;
-        for (const auto& [type, config] : mRefreshRateConfigs->getRefreshRates()) {
+        for (const auto& [type, config] : mRefreshRateConfigs.getRefreshRates()) {
             if (!config) {
                 continue;
             }
             if (config->configId == mode) {
-                mTimeStats->recordRefreshRate(config->fps, timeElapsed);
+                mTimeStats.recordRefreshRate(config->fps, timeElapsed);
             }
         }
     }
@@ -148,17 +144,17 @@
     }
 
     // Keeps information about refresh rate configs that device has.
-    std::shared_ptr<RefreshRateConfigs> mRefreshRateConfigs;
+    const RefreshRateConfigs& mRefreshRateConfigs;
 
     // Aggregate refresh rate statistics for telemetry.
-    std::shared_ptr<TimeStats> mTimeStats;
+    TimeStats& mTimeStats;
 
     int64_t mCurrentConfigMode = SCREEN_OFF_CONFIG_ID;
     int32_t mCurrentPowerMode = HWC_POWER_MODE_OFF;
 
     std::unordered_map<int /* power mode */, int64_t /* duration in ms */> mConfigModesTotalTime;
 
-    nsecs_t mPreviousRecordedTime;
+    nsecs_t mPreviousRecordedTime = systemTime();
 };
 
 } // namespace scheduler