She is looking lovely. Nice adjustments
Now on the nutes. Ive never used them so my knowledge is limited on it. But never feed before the cotyledons (small first circular leaves) yellow then fall off. The hold all the necessary nutes for seedlings.
Also if you search there is a manufacturers chart around here somewhere. NEVER go into it at full strength. The makers dont know what strain your growing and they are all different. Also they are in the bizness of SELLING MORE NUTES. Start at approx 1\4-1/2 recommended strength and slowly work your way up.
I think the best schedule is Feed, Water, Feed. But there are always variables in each persons grow. Temp. Environment. Humidity all play a roll
Now watering. I water my girls every 2-3 days at their size now. 1.5 months in small pots. And my flowering girl every day or 2 depends on her thirst. Easier as u go along. U start to recognize hand weights.
But at your very very vulnerable stage overwatering is a real danger. Maybe once every 4 days with a few ozs of water around the edge of your ‘expectd root zone’ out towards the edges of the pot. Reason being you want to make the roots reach out n search for water. And not ‘damp off’ your stem. Too much water too close can be extremely detrimental. If the top is exceptional dry between waterings a light spraying of the topsoil works wonders.
Sorry for the info overload. Just wantd to answer all your questions thoroughly. Good luck