I'm sorry that your question wasn't answered in a timely manner. Both persistent panting and polydipsia are danger signs in dogs.
Excessive panting can represent both medical and behavioral problems. It's often seen with elevated ambient temperature, exercise, anxiety, or perceived pain. To confound the diagnosis further, it's also seen with fever, narcotic administration, glucocorticosteroid (prednisone, e.g.) therapy, Cushing's disease, hyperthyroidism, hypocalcemia, pheocromocytoma (an adrenal gland tumor), cardiac disease, tachyarrhythmias (fast irregular heart rates), brain disease and obesity. Most of these diseases can be ruled out at a such a young age.
Polydipsia is seen with urinary tract infection involving the kidneys, both hepatic and renal insufficiency, diabetes mellitus and Cushing's disease, Addison's disease, diabetes insipidus, hyperthyroidism, psychogenic polydipsia, electrolyte (sodium, potassium, chloride) imbalances, hypercalcemia, and pyometra (uterine infection) in the intact female. Once again, most of these diseases can be ruled out in such a young pup.
Lola's symptoms are important enough to have her vet perform a thorough physical exam including diagnostics in the form of blood and urine tests. Testing for those disorders not seen at her age isn't necessary and so discussing with Lola's vet what should be tested for would be prudent before proceeding. Please respond with further questions or concerns if you wish.