Hey Delboy - hope all is well sir!
The Purple Punch I have running right now took about 5 weeks to get going, and now she is has gone triffid - a couple of weeks ago I nearly pulled her - but as all mine use the same res, when the other plant went on to bloom nutes it triggered the laggards I think. Also, had some Lemon Auto from sedsman that would not flower and I pulled them at just under 7 weeks. If you have a photo tent I have seen people forcing/triggering flower under 12/12