When to amend organic soil?

Hey guys I’m running my first organic run with BuildASoil 3.0. As I understand it this mix is pretty much an “all in one” for the majority of the grow (I am assuming I need to, and plan on adding, a flower amendment and/or tea). The plant is currently in veg, from seed.

The soil is absolutely amazing and the plant loves it. Once 4+ nodes sprouted I started my classic stress training technique which is sort of a modification on main lining — that is to say, it’s high stress.

I’m wondering if anyone recommends amending the soil during veg, specifically with the plant recovering from stress training? I’ve noticed it’s been looking slightly less healthy, and blame the stress training as that usually knocks her down for a week or so. But ultimately I’m just wanting to make sure she has the best environment to grow in! 🥰

Can upload pics if necessary but I’m not so much looking for any “diagnoses”, but rather just some input from other organic growers who have been at it longer than I have!