greenhouse cheese slow flowering

[astrix]

Hi guys I have a problem with the girls I'm in sixth week flowering 37 days and 65 total from seed, the plant is greenchouse cheese
ph 6,5
soil biobizz lightmix
nutes andanced nutri. ph perfect ec when feed them 1.2
light 600 hps
the plant looks like sativa i dont have expirience with sativa nevergrow but in greenhouse says is indica is this indica??

my problem is the buds is to small for 6 weeks flowering

and this plant is same cheese the buds is the same tiny litle better