Start feeding

soil from seed:
2/3 FFOF
1/3 perlite
7 lbs. EWC
cup of:
kelp meal
fish meal
oyster shell powder
rock dust

no nutrients up to now, 7 weeks from seed, 10 days from flip 12/12.
water mix of RO and tap to get to 150 ppm, no ph done

Blue Orca Haze 10 days into flower:

Im a hydro guy but it looks good so far
Wouldnt worry much about that baby leaf dying off.

Im sure the dirt guys will be here soon

It looks nice and healthy. The soil was pretty hot when you planted, so 7 weeks is definitely within reason. You know your plants better than anyone else.

If you think it's time, sure. Go ahead and start giving it more food. Since it's not showing problems, you don't need to make up for anything. I'd go slowly.