Himalaya Gold strain info required

Hi Folks!,

I'm growing 4 Himalaya Gold plants and they are in their third week of vegging. I'm a bit concerned as they are only 6 inches tall but looking healthy.The reason i'm concerned is because this strain has been known to grow upto 2 meters tall!
I have them in 2 liter pots and i'm growing in loam soil with perlite mixed in. I feed them baby bio and Atami ATA XL.
I think i should flower them soon as i am limited for grow height (around 4 feet max) but not sure if i should veg them any longer?
If anyone has any experience with this strain please could you help me by giving me some advice please?
Many thanks.

my advice to you would be patience.. in my experience growing in soil the first 3 weeks are slow, building the foundation.. then weeks 4 - 6 i see much better branching and veg growth. . . then when flowering is induced they TAKE OFF!! so be patient and take into consideration that your plants will double or triple in size when they are put into flowering..