How to make my flowers more fat

P.S. - It is too late for these plants to do anything that is going to make them fatter, just not enough leaves left.

Don't defoliate your plants! More leaves = more energy = bigger buds. Add some humic acid, fulvic acid and amino acids to your line up and plant with the addition of mycorrhizae.

Think the question is a bit wide to give you a useful answers. Assuming all other considerations are within optimal range (nutrients, ph, ppfd etc...) ... stop stripping the leaves.

You could Try lowering your light to stop them reaching reaching and grow in larger pots

Aside from giving them as much light as possible, when they get into Week 3 of flowering, start giving them additional P and K... these two nutrients will put more power into bud formation and density... I use General Hydroponics KoolBloom liquid with an NPK of 0-10-10 until the last two weeks before harvest when I switch to the dry formula of it - that has an NPK of 2-45-28... Good luck!