I'll share with you my "bible" when it comes to the topic of defoliation... read the whole thing, it's really quite enlightening! And you'll know exactly what to do... https://www.growweedeasy.com/nebulas-super-simple-3-step-defoliation-tutorial
You also need to have a little patience... it's amazing how much the buds fatten up when you're not looking! Meanwhile, you don't give any details as to the nutes you're using... you might want to give her some extra potassium... I like to use Langbeinite - it has an NPK of 0-0-22 and I just sprinkle a tablespoon of it on the soil once a month (you'd only have to do it once now!) ... it should really help fatten up the buds nicely!
Nice looking grow! I think you'll be very pleased when it comes time to harvest!