If you raise the limit, it still depends on your spending power and your credit. If you have strong spending power and repay the loan on time every month, the bank will take the initiative to increase your credit limit after a while.

However, since you have just raised the limit, you should not raise it again in a short time, unless you can prove that your income has been greatly improved than before, and you often spend money by credit card to keep repayment on time.