If you had asked me this question 4 years back, I might have said 'yes'. But from last 3-4 years UPSC is digging deeper into current affairs. It's good to know as more as you can. One-year Current Affair is the minimum requirement. Try to cover 1.5 years or 2 years current affairs. Online sites are really helpful for students to strengthen this part.
Sites such as UPSC Panda
, clearIAS or classicIASacademy are regular in posting content. Along with this follow newspaper regularly and keep revising what you have read.