Are my buds ready nearly? (how long left?)

Marvelous plant sir

yeah definitely needs a few more weeks, its just about to start putting on all its weight in the next few weeks, your harvest will be substantially bigger/more impressive/more potent. I grew a northern lights this year, couch locking and super smooth smoke, not my favourite strain and not my best diary but let ot finish up and its a quality smoke

If the trichs haven't started to turn amber, you're way ahead of yourself... put them back on your nute/watering/nute regime and wait for the trichs to tell you when THEY'RE ready... you should see about 30% amber before you start your flush... could be another 3-4 weeks and much larger colas/harvest, too!!

You still have 3-4 weeks before needing to start a flush, so don't stop feeding just yet. Start a flush when there are about 95% brown pistils and harvest once there are 98-99% brown pistils. This will give you buds with peak THC levels and will put you in the "10-30% amber trichome" zone without having to look too hard.

look for diaries of the same plant around here and check similarity. I would say 2 to 4 weeks more.

yeah agree clear to milky you can push her few weeks more imho.