That's a pretty plant, healthy, but unfortunately that's not a Chemdawg. Not doubting you whatsoever, I believe Chemdawg is what you (thought you) planted, I believe you!!! But I grew the original Chemdawg back in the 2000's and it never stretched like that. It was always a compact plant that finished fairly quickly! Lost my grow logs but want to say I remembered about 60 days to finish as a photoperiod. I'm afraid what youre experiencing is a slow flowering pheno from Fast Buds.
I've been a fan of theirs for years, but it seems they recently have concentrated much more on pumping out strains with classic names that sound good, but no stability whatsoever from seed to seed. That breaks my heart - I'd love another Chemdawg strain.
Just like their Gorilla Glue; I've grown it five times looking for another pheno like the first time I grew it. Everytime has been different - too leafy, poor quality buds with no frost, two runt plants that looked like bonsai cannabis / didnt produce, one didnt even germinate.
On the plus side, your plant definitely is in bloom, it's just that at 60 days it should be much further along. Reducing light cycle won't help you; let it ride & you will probably get a very good yield. Let's cross our fingers & hope it's a very good yield of very good weed. Just not Chemdawg.
More info for
@Son of Hobbes 's thread on breeder stability.
