Yes, never file your ITR in a hurry. Always make sure you have enough time in hand. You must file the return before the last date of filing ITR which is generally July 31st of every year. However due to the covid-19 crisis, this year, the dates have been revised many times. Another aspect you must be wary about is getting the calculations right. Always check twice, thrice before entering any income information. If required calculate it two/three times. If wrong details are entered, your tax deduction will also be wrong and then you may have to pay penalties without any reasons or face hassle.