Moms and plants can survive in many conditions, cannabis can thrive with no soil or can be grown in flour. Whats possiable and whats ideal is different. Moms start to slow down and lose vigor after a few years are manily useless and generally to suck if put ouside after too long as a mom. But think about this, a plants above ground growth is merely a reflection of whats below, and is simply a sympotom of a much more complex and diverse system thats creating life below ground. A healthy plant has healthy roots and if not will struggle. Imagine if you wore the same sized clothing for a third of your life? I dont see too much stress beyond the tiny stunted size and the extreamly woody stems(i bet the roots are similar condition), i bet the pots are 90 percent roots and are definatly turning brown and dieing off, you may get bannanas as a result(thats what folks usally mean when they say herm) but the real impact will be on your yeild. If the root system is extreamly damaged(anerobic, woody, oxidizing and lacking bennies) the roots will have trouble expanding and growing out, making it harder for the plant to interact with the living soil food web, issues with nutritents and aspiration that ultimatly impact your plant health and then the flowers of said plant. Your plants if they have not sexed prolly will not till they are transplanted uless you flip them into flower, or 48 hour dark to force it. I like the pre flower due to happiness method best, changing lights and shocking them with dark are not my way. Bag o dirt and few more pots wont put ya back too far mate
The thing here mate is you have pleanty of time to start more!!!!!!! So dont get down, follow these plants thru and start some more as back up in a month or two and see what you think.