sorry, I didn't realize it was already flowering. That would depend on how delicate you think you can be
If you think it'll get bumped around too much just keep trying to work with it. But the problem for you is that if the leaves keep looking like that, it will affect yield and quality for sure, so replanting might be the lesser of two evils for you. You'll have to decide for yourself though.
And B1 is just b vitamins. If you're growing with chem nutes their are products like "No Shock" from AN and stuff like that, if you're growing organic-based you'd use a liquid b vitamin supplement like Thrive Alive or something.
If the one and three leavers were already there before the lighting issue, that's probably not it then. Some strains are sensitive to that happening for whatever reason.
The only thing I can see right now without knowing more that would cause the 1 and 3 leavers is some kind of light or heat stress or the soil/nutes. And the drooping leaves could be any or all of soil/nutes/over-watering. Or if could be a shitty clone or seed and you just got unlucky, I suppose that's a possibility as well. I think someone posted on the last page that they ran a strain for a year that did this.