buds grow like that sometimes
but certain pgr can cause that kinda longer flower
tbh its nice if you can get a fat bud to get longer but what you have there is very long flowers being produced
I would check what your feeding as I know that Plant Steroids by evoponic and GA3 can both be used to cause buds like that also many strains will grow like that later in flower so something is a bit off
How long have they been in flower ?
Some seaweed extract or some kinda booster may help you get them fatter or just more bud, I like triacontanol myself I use it in my folia spray I try to get them 1 to 4 times in veg with it and 1 to 4 times in flower makes the bush more and grow faster if you get the dosage and timing dialed in, plus I`ve used it on plants that had been in flower ages and if the flowers have not gone dry and closed yet I always find the plant will make more hairs and grow the buds bigger
but the main issue sometimes is "is it worth running them another 2 to 4 weeks" ? as yes that triacontanol may add some to the yield but if I started with a fresh plant and ran it for 6 to 10 weeks would my end benefit mean more buds ?
So I have to start considering if keeping the plant on longer is worth using up my grow space for