Kali dog x2 / Critical / white widow

I take it you mean topping by cutting the apex these plants look kind of small to start HST on them and then flip I doubt you will end up with a ver big plant she still might yield well but she would be close to an SOG kind of frame to a normal plant You should top it now if you plan on switching in a week as this will give her time to recover from being topped lol hope this helps good luck on the rest of the grow :)