Stonerdanswered grow question 4 years ago Roots growing out of the pot is usually a sign where the pot is too small for the plant and it is time to transplant!
In your case I am not sure which pot you're using so I'll explain all/most of them
-normal plastic/clay pot with drain holes - will work but least efficient because when roots reach the bottom they start growing out of the bottom holes into the drain and will easily cause root rot and root bind.
-air pots - which are great option with good drainage and air pruning (roots grow out of the holes on the side instead of bottom and dry out when they contact air)
-fabric pots - also a very good option that work in a same manner as the air pots, roots grow out of the side of the fabric and dry when contacting air (air pruning)
*The choice between air and fabric pots usually depends of personal preference and use.
*For your situation as long as your plants are still in vegetation then transplanting or pruning the roots is the best choice, for transplanting try putting them in a 11+ liter pots and since they are autos then keep your grow space and room you have for the pot itself in mind (the bigger the pot is the more room for roots she have so the more time you have until flowering the bigger the pot you'll need). Root pruning while in the same pot is done by removing the pot after about an hour from watering (so the medium will be firm and wont fall apart when you take it out of the pot) and carefully cutting the smaller newer roots that start growing around the bottom of the plant.
Transplanting would be a better option for you since root pruning may cause unnecessary stress to your plants!
Hope this helps! good luck and happy growing :)