vegging indoors for 3months, trying to move outdoor to continue 2 veg los angeles

I have indoor females that I want to veg until spring and move them outside in an attempt to get some monsters next fall, I am using smart pots. fox farms soil, dyna grow, last time I tried 2 move my plants from indoors to outdoors in may and they flowered on me, I am thinking of adding additional lights around the plants to prevent early flower, need advice, on how to successfully move vegging indoors plants that have been vegging for 5months without flowering them

Move them at night and provide the same light schedule inside the house as it is outside before you transfer.

12 hours of light only is the key point for it to start flowering; so be sure it's still long days when you re plant them wherever you live.

You need to figure out how much light they will get in May, and grow them with about that long of a light cycle, if the sun is only up for 14 hours a day in May, veg under 16-18hours. It's the reduction in light hours that triggers a false flower, 12-12 isn't the trigger, the reduction of hours is the trigger,12-12 just keeps them in flower mode. I guess it depends on your location, but I had this happen a few years back. Started a plant in January under 20hrs of light, put it out in April, only 13 hours of light...it started to flower, but reverted to veg after a couple weeks, due to the increase of light hours..turned into a monster..all the flower spots turned into branches with multiple bud site. Wish I could help as to how to avoid that, maybe slowly cut back your light hours to match the outside hours before they go out?

Slowly changing light scheduled worked for me on one strain. Didn't work on the other. Right now I'm using a 23 watt cfl hung over each plant to keep them veging. I have the lights on a timer so they get an extra 2 hours of light at dawn and an extra 2 hours of light in the evening. I figure when I pull the lights down they'll probably flower right away.