Take a close look.
If the Branches are directly opposite each other where they leave the main stem, let 'em veg a while.

If they have started to alternate, go ahead and flower.
If healthy, they can double in height during flower.

But fix your issues first.
Flowering is stressful, if they are not happy in veg., trying to bud might kill 'em.

Aloha,
Weezard