Views on shettles method? Any success?

So I have a 9 month old baby boy.. and we are currently trying for baby no 2.. I would like to have one of each so I was told about the shettles method where you can try and “gender sway”.. I was just wondering peoples views on the method and if anyone had any success to the gender they were trying to conceive..?

Obviously it is a blessing to just have a healthy baby regardless of gender but I thought there was no harm in trying a method..