Slowing the growth?

I have some lovely cuttings growing at a fast rate under a 250cfl but my new room is 2 weeks away from being ready to plant in at the moment they are in 3" rock wool but there final destination is the iws system in clay pebbles I need to not sure how to keep them for 2 weeks whilst the room is prepared I've had them 2 weeks already and they are more then ready now???

Train them to grow into bushes, that'll give you the time you need. Look up LST supercropping if you don't know about it.

Good luck!

pop them under a smaller bulb....i use a 2 x 55 watt cfl for seedlings and clones but if i want to slow growth down i take one of the bulbs out. alternatively just put them under a bed side lamp...as long as there gettin some light they will be ok