No. It is impossible to live without hypothalamus.
Hypothalamus
Hypothalamus is located above the pituitary gland and below the thalamus.
Hypothalamus is the smart control coordinating center of our body which is deep within the brain. Its main job is to keep your body in a state of homeostasis, or balance. It accomplishes this by influencing your autonomic nervous system or by controlling hormones.
Many of your body's key processes, such as heart rate and blood pressure, are stimulated or inhibited by the hypothalamus.
Corticotrophin-releasing hormone, dopamine, growth hormone-releasing hormone, somatostatin, gonadotrophin-releasing hormone, and thyrotrophin-releasing hormone are all hormones produced in the hypothalamus.