Small pot big plant

An der Größe deines Topfes liegt es nicht. Bei deinen angegeben Maßen wären das ~9,425 Liter Volumen. Das reicht locker um eine Lady erfolgreich zu growen 😅👌

Doesn’t sound like it should root bound, id judge it by how ofter you’re watering it (from wet to dry) If your water and every other day then its fine, When you’re watering every day the roots will be completely filled out then you can pot up or leave it of its in flower, as a blow leaves drooping to be a matter of things normally over watering or under watering, Good luck 🌱

Dear grandmother

There are so many reasons why the leaves would droop.... overwatering, underwatering, nute issues... we'd need to see a diary to give you any kind of informed advice! Do you HAVE a diary for this grow? If not, put one together with as many weeks as you can remember (even 2 weeks would be good) and then post the question again! Good luck....