New Grower First Grow - DP Daiquiri Lime Auto Flowering Problems

[Gilbert]

Hi all,

DP Daiquiri lime auto in 3 gallons airpot, supersoil by SWA, QB 100w led at 50cm to the plant, temp at about 25°C and 50% humidity. Just tap water from the start.
I'm now at week 8, flowering form about 7 days, but the plant is flowering very slow.

Accidentally broke the main stem at week 5, can this be the main problem for the slow flowering?

I also see yellow spot at leaves tips and brown flower, for sure not over fertilization. Maybe some deficiencies? Light Burn??

Here some pics.

Thanks

G.