Chronic onset of forgetfulness. Tia.

For the past 8 months, I have been experiencing some symptoms related to forgetfulness and have realised that there has been a gradual decline in my overall congnitive abilities and brain functions. Symptoms:- 1. Difficulty finding the appropriate word while speaking in front of a formal audience and meetings. 2. Trouble remembering things which are crucial for my job such as the flow of an algorithm or a specific business strategy. 3. Forgetting names of friends or famous personalities whom I can recall by their face. 4. Overall decrease in motivation and ability to pursue something difficult till the end. Significant Past Medical History:- I was diagnosed with Hepatitis-A related Jaundice last year which I recovered from fully after follow up. Past Medical Opinion:- I consulted with a neurologist who diagnosed me with anxiety and hypertension and prescribed me medications but those did not work as expected. Kindly help me with suggestions and next course of action. TIA.