My 1st grow and my bud are not swelling up.

I have a problem my buds are not swelling up.
Im on day 50 of flowering, on the pack of seeds it says 63-84 days they take to flower.
the strain is cheesus
im using a 600 watt cool tube with 5 inch extractor fan and 4 inch intake fan, i have one tower fan inside the grow room.
grow room temp in the day is 75-80 and at night 55-65.
i veged for about 4-5 weeks lights on for 18 and off for 6, using ionic grow nutrient solution for soil, then they went into flower lights on 12-12 i used the ionic grow for 1 more week, then i started using ionic bloom for soil used that for 4 weeks then i started to add bloombastic been using them mixed together seens. im now on week 7 day 51 0f flowering.
i have canna pk 13/14 should i use this? can i use this with my bloombastic?
is there anythink that i should be doing or giving to my plant.

should i cut off the brench in pic 1 and 2?
CAN ANYONE HELP ME THANKS

Could be some sort of light leak thats stopping them getting fat. Or you could just be impatient .

Whats light leak? This is my 1st grow
thanks

light leak as in if you have openings in the area your growing in comes out less light for the plant less light less growth
i have a tent dont gotta worry about this.

pack says 63-84 days they take to flower, youre on day 50....wait, its just the last few weeks they plump up. Youre not even the the lowest flower time yet

They're not looking bad at all. Are they in a confined space like a closet, or as dk mentioned, a tent? By your pics it looks like they're in your general living space? Mine are in a closet and I hang a piece of cardboard over my closet doors to keep light from leaking between the cracks.