First grow

Try to raise that humidity and don't think to much about nutes yet. Let her roots grow and the plant will follow. Also the pot looks very large for the size of the plant, no?

Your plant look like they're on schedule. Your humidity could be a bit higher 50%would be good.Progress is slow the first couple of weeks of bloom. In week 7-8-9 you want to use a higher ratio of phosphorus (produce bud growth and bud sites)and potassium (increases bud size and density. You can gradually add bloom booster supliments at this point. These weeks usually show the most progress. When you adjust your nutes take notice of the leaves if you see any brown tips or curled tips you may have to back off on your nutes a bit. A lower ppm feeding 2 -3 times a week is better than just 1 or 2 at too high a dose. It would also help if you listed the TDS of you feed solution. You just need to be patient. I also noticed that it looks like you topped one plant? With autos sometimes it sets them back a little bit. She may run a bit longer in bloom it's impossible to predict. It looks like a 10 to 12 week strain you have plenty of time to bulk those buds up. Good luck I'll follow your grow.