Extreme high blood pressure WILL damage kidneys. Don't wait and get your medication to bring down the blood pressure immediately. At such reading, there will be risks like strokes.

Sunway and Ramsay SJMC also got many cardiologists. My own cardiologist is in Ramsay SJMC Ara Damansara, Dr Liew Chee Koon.

I just had a hiking walk around Bukit Timah Nature Reserve. Good place to burn your calories.

Meanwhile, go for a full medical check up and that would be a starting point to find out why you had high blood pressure. Is it from lipids, blockages to your arteries, thyroid problems, heart disease,etc. Take care and go buy yourself a Omron BP meter and record the readings every day in your dairy. The doctor would need these info.

You must understand how Lowering BP medicine work. Some work by blocking calcium to your heart. If you r heart do not have too much calcium, it will pump slower. But when you do not take the med, normal calcium will go to the heart, and it will pump faster. That why you cannot stop taking the med altogether after your BP stabilised. What you can do is to lower the dosage but only strictly by the doctor. Cannot suka suka stop taking and think by exercising or diet will work. Those will help but it can only happen many months later. In the short term, your BP is still very high and you might kena stoke or kidney failure.

Very good you know your problems and risks that go along.
I was in the same situation like you before. Bought a cheapo meter and think I am ok. If the pressure is too high, I will take readings many times hoping the reading is not right first time. My reading then was 168/110.
What you should do is to record your reading every day, maybe 3 times daily and each time 2 readings. Our BP fluctuates and it is important to get a consistent reading over a period, normally 1 week. Do not talk and close your eyes when taking the reading as it will affect the pressure.
If your BP is above 160, you should already have dull ache at the back of your neck / shoulders, severe headaches or some fainting spells especially when you get up in the morning.
Nowadays, I take my BP medicine at the lowest dose as given by my doctor. And I feel good as I do jungle hiking almost every week. Take care.