Wa Alaikum Salam. Yes. I am doing fine. Thank you and how are you?
If you are using 5w-30 and is working absolutely fine in your ride, the engine is in good health, you must stick to 5w-30 and continue using it.
No need to khwaam khwaa go for thick oil.
Remember, OEM recommended oil grade is best suited for the car. When you switch from extremely thick to extremely thin and vice versa, without any logic, you mess up with the engine. Even if switching, that must be within OEM recommendations. Otherwise, Kaam na b kharab Hona hua to ho jye GA.