New England Bad Season this Year Help please?

So Long story short. I planted my autoflower crop for mid summer harvest around MAY 5th. Here are some pictures. we have had fluctuating weather consistently this spring/summer so some days its 80 and nights can be 45 or so, so i have been bringing them in and then putting them back outside when I get up for work... It seems like the last set of bottom leaves all died on almost all my plants, Im not so worried about my photoperiods but my autoflower seems to be flowering after a month and its maybe 6-7 inches tall?

Can someone tell me why my bottom leaf set died this time around, am i over feeding or something? I very lightly fertilize autoflowers but follow the fox farm schedule for my photos. Argh, if this autoflower is flowering already will it continue with upwards growth? at the size its budding at right now I might get a quarter or something lol.

Help please I use fox farm and JCs soil mix they were growing so great now its seemed to slow. This is my 3rd season and its a real shitty one for us new englanders.

I generally have ft tall Autos for mid summer and like 5-6 ft photos by sept but those bottom leaves are looking crunchy and dead, will they keep on with the vegetative period?

Cotyledon leaves will die off fairly rapidly in autos. It's normal do to short life of autos.
There is some overwatering that's noticeable. If you stress AUTOFLOWERS , they will stunt and drop yield significantly.

Also AUTOFLOWERS begin preflower/flowering in under a month. They have a very short veg period.

I'm up in N.E. and I think it's the weather personally, I have a buddy running 4 diff autos in soil and all of them popped then just sat there for 2 weeks..they are now 3.5 weeks old and only about 6" tall. He's not too happy.

im about oh idk 25 from the international border in N.E. rule of thumb for decades up here is start em indoors in march aprilish to get them big and healthy (while in veg 20/4), then have them put outside in desired spots to finish. Only heavy sativa doms and sage on rainy summers that molded have given many issues.

Thanks guys great info!