Advance Tax For Freelancers

Hey, So i am a contractor and my annual income will go above 30lpa thats projected . I am gonna file unders ection 44ada this year so just wanted to know if i need to pay advance tax or not .. cause many sites write that i need to pay advance tax every quarter and some sites says that i can pay all the 100% tax before 30th march as advance tax and then file itr with this advance tax .. so my question being should i do quarterly apyment of advance or just file before 30th march the whole amount ? Also preivious year i got some amount of penalty i think 1000 ruppes for late payment of something even though i payed it before 30th march , so please help