What should i do with the plants like this?

One thing I certainly would be doing, is not buy those seeds ever again! Results like these is why I stopped growing auto flowers, - too many weirdos. One of your plants looks about ready, the other two about another 2-3 weeks. You could just harvest them now, they certainly won't be doing anything spectacular. Luckily you still have some time to get another crop in, try some "fast/early" versions from a number of breeders, or even just some photoperiod fems, you will still get decent flowers, just smaller plants. Around this time is my favourite time to plant, I much prefer to have many smaller plants rather than only 1 or 2 large plants, that way I have a strain for every occasion! Sweet Seeds seeds are awesome and come highly recommended by me!! Hope this helps,........... Organoman.