Every Tek I've read lately has stated I should have full colonization within 14-28 days. I could not find an answer anywhere as to what happens if you go
past the 28 days.
Is 40 days too long? or is 60 days tooo long? Is it necessary to re-hydrate your jars after so many days?
there is a section in shroomery that i read about birthing a cake when its not complete. there is info there as to why it may not be growing.
i think it was under the contamination section and if i feel like diggin for ya instead of looking at porn i may post a link.
least im honest.,
if you followed the recipe and did not over temp them (which is hard to do)
then you have two variables at this point. lights and temps.
they should be in as much darkness as can allow and you should find a way to monitor your temps.
i think that i have read if you ABSOLUTELY have to birth an uncomplete jarr, then try to scrape off as much unused cake as possible done to the mycelium and MAYBE treat that small area with a light H2O2 solution to prevent bacteria.
the info is there, keep searching. you should learn about contaminants anyway to give self idea on what to possible expect and what you can get away with.