In my exp. huge shrubs do take longer to finish indoors ,
All about light placement -reflector-growing style etc...<- like opie said . Never rely on a breeders claims of 8 weeks - 10 weeks etc... to flower either . Always rely on your pocket scope and check your trichs .

I've done same strain in and out that end up looking nothing alike too. Mother nature does the "toxic waltz" on outdoor plants via. rain , pests etc...
Peace
Crispi :jointsmile: