am i ok to start flowering nutrients?

last time i watered was on friday i began 12/12 last night. the soil is begining to show that it needs to be watered. my question is last watering i used 1tsp of FF grow big per gallon. the next water should be without nutrients if i stay on schedule. they have only had 2 feedings of grow big so far and been watered 5 times sence seedlings.
they are in a soiless mix in 5 gallon pots. will i be ok to break the feeding schedule and put a small dose of tigerbloom in with the next watering? there is almost no nutrient burn but they are a VERY lush green. there is some current pics of them. plants are a little over 4 weeks old now. i just dont want to burn them and stunt growth they seem to be comming along nicely.
Also as far as Big bloom goes the directions say to not use it till there is the first sign of flowers. so im guessing atleast another couple weeks on that. thank you to everyone for help making this first grow go so smoothly so far

Yeh,just water them.You can tell by picking up the pot,when they need water.As for bloom,you can start adding it on the 2nd week of flower,along with the veg nutes 1/2&1/2.

i watered them with a dose of tiger bloom we will have to wait a couple days to see how they react.

Im Lovin your indica ladies!!! whats the strain?? +rep for sure. what ever your doing its all right. Be carfull not to burn them girls or you will end up like this guy.

assorted bag seed i got a few pounds of mids about a year ago or so and saved the seeds out of the shake.

Nice dude. Ill keep an Eye out for your Threads an post i like to see when a man knows what he is doing.

there getting little tiny pre flowers. alot of them look male but i really cant tell yet. pear shaped but no hairs comming out yet. going to have to give it a few days its hard to see them with a magnifying glass. lets keep our finger crossed. half of them put on 4 inches in the past 2 days sence starting 12/12 hope the trend keeps up, want lots of room for some pretty buds.