Hello DenzelFreegreen,
There are two issues why your buds stay small;
1. you feed way too less than you should.
In this period of time you should over feed proportionally to fix the problem.
Look at this formal chart by GHE it shows amounts of those who did not fed properly. THIS IS NOT THE REGULAR CHART - USE IT ONLY WHEN LEFT BEHIND
https://gh.growgh.com/docs/Feedcharts/GH_FloraSeries-REC_03216am.pdf
1a. Advanced nutritions should be 2ml per litter. You should stop feeding Tarantula, Pirahna and Voodoo Juice from week 3 of flowering till harvest.
You shouldn’t have begun with Sensizym by this week.
2. Please specify the exact lighting in use. I do not know many if any 120W lights producing enough microlux therefore your plant doesn’t get the required DLI (daily light integral). Most likely your lights are way to far from plants. Can you measure it with PAR? if not specify as much about your light and I will calculate the exact distance you should have it.
Regards.
Hans Gruße
P.s
My answers relay on that information mentioned on your diary so I do hope its accurate.