Waking up repeatedly during the night after previously sleeping well can happen for several reasons, even when using Clonotril 0.5 regularly. Over time, the body may become less responsive to some sleep medicines, and stress, anxiety, overthinking, depression, irregular sleep timing, excessive screen use, caffeine, pain, or other medical conditions may also disturb sleep maintenance. Long-term use of sleep medicines should be reviewed carefully because sudden dose changes or stopping the medicine without guidance can worsen insomnia. Sleep disturbance that has persisted for the last month may indicate that your sleep cycle, stress levels, or overall health needs reassessment rather than simply increasing your medication on your own. Maintaining consistent sleep and wake times, avoiding mobile use before bed, limiting tea or coffee in the evening, and keeping the bedroom quiet and dark may gradually improve sleep quality. Relaxation exercises, light physical activity, and stress management may also naturally support better sleep. Talk to your doctor if the night awakenings continue, or if you develop daytime sleepiness, anxiety, low mood, snoring, breathing pauses during sleep, or dependence on sleep medicines.