You need to wait for withdrawal.
If you reach your return goal, you can withdraw anytime.
No holding period.

Your own goal; not the simulated goal.

For instance, I just want to achieve 10% return with amount of RM 10000.
Once reach I will draw.
It also depends if your investment is short, medium or long term.

just treat this as a forced savings lah. RM100 also want to withdraw?   should try and deposit at least every month until you retire (hopefully wahed can last long) or require the funds for emergency or better investments.