Reveg young plants

[organic3]

Hi ive moved my veg plants to a bigger tent but I forgot to turn the lights back to 18/6 veg the lights were on 12/12 for about 2 weeks ive noticed some white hairs popping out how long aprox will it take to go back to veging as the plants are a bit to small for the switch to 12/12 thanks

[Ckbrew]

I once re-veged some clones with small buds on them, took 3-4 weeks.