Can I use the reversed method to wipe my ears in wudu?

So from long ago I learnt wudu by putting the thumb in the ear and use the index to wipe alone the outside of the ear and then put the index inside, but recently I discovered that the sunnah is to use the thumb to wipe the back and the index for the inside, I know it’s a sunnah but is my own method correct? And do I have to repeat wudu or continue normally?