Yes! There is no penalty for making early payments toward your loan. You're welcome to do this during your study period, grace period, or simply make extra payments during the repayment period.
Making early payments does not change any other loan terms or your payment schedule. We'll still expect you to make regular payments during the repayment period according to the original schedule. However, making early payments does reduce the total amount that you'll eventually pay toward your loan. It also reduces the amount of time that you'll need to fully repay (settle) your loan, so long as you stay on track with all your other payments.