Training Plants to early ?

I would train the plants by bending the wbiggest one down to the same sice because whe will be double the sice of the others by week 6 and then it‘s too late. Also you can bush her out more this way.

There is not right and wrong, there are multiple ways to do it and you have to decide how you want your plant to look like in the end. I think you should watch some youtube tutorials so you get a sense for what you are doing and don't just do anything just because someone told you to do so. So in the end you can make up your mind on your own. If those are regular plants, i think topping should be done anyway so they don't grow like a christmas tree, but for that it may be a little bit early. Next time also put them deeper into the Pot, there is too much wasted space like this.