Light color hasn't changed much. I think it's my dumbass that kept misting the leaves when the light was on... So I stopped doing that.
I waited for some slight drooping before feeding (21/03) which was 3-4 days since last feeding. The plant is clearly drinking more as I had to feed again on the 23rd and 25th.
Overall good progress, the 4th pair of leaves are well underway and the 5th pair started to appear.
Transplant to final pot should occur early next week and I should be able to top shortly after that.