First inside grow

Today is Thursday, Nov 21st, day 84. I'm cutting down Lemon OG Haze #2, White Widow #2 and Super Skunk #2 tomorrow evening. Short Rider #1 and 2 I'll give a 13th week to because the buds are still fattening up and still white hairs sticking straight out from them. They got their last round of nutes a week ago so 2 wks of flushing ought to be good. After that ive got to clean the auto flower area with bleach water to remove any thrip larvae so my next grow doesn't have the same issues hopefully. My next round of autos has already been seeded 9 days ago and is in the tent with my photoperiods now, awaiting transfer to 5 gallon grow bags and into the sterilized autoflower area. About those photoperiods...I did one more round of LST with some twisty hook things i bought from the hardware back a while ago to try and bend the tallest branches down a bit and buy some more time and utilize as much space as i can before i switch from veg to flowering. My problem with them now is some kind of deficiency is going on. Don't think it's nute burn. I haven't given them any nutes in about 2 weeks. I am pretty sure I've got a nitrogen deficiency going on because my leaves have slowly turned more light green over the last month+ and the veins of the leaves are darker on those. I went out and bought Sensi CalMag Xtra (4-0-0) as well and been foliar feeding them the last 3 days. Not sure what the minor rusting is on some of the leaves, whether it's leaf burn from the foliar feeding with lights on or some kind of other deficiency going on. Please if somebody knows what it looks like my plants are suffering from here, hit me up in the comments so i can address it properly. Not sure if i should hit them hard with veg nutes again for the next few weeks before i switch the lights, or instead of foliar feeding give them the Sensi in their next watering, or if i should be foliar feeding right before lights out incase I'm burning them. Or all of the above/ none of the above. I have no idea, this is my first rodeo with inside photoperiods. My compost comes with enough nitrogen to get the auto-flowers through veg without nutes but I'm thinking its running out on these photos earlier...?? I also had moved my space heater from the autoflower area to the photo tent about a week ago. The autos didn't need it anymore and i thought the photos might benefit from it since they're still in veg but i turned it off yesterday because i think they might be too heat stressed as well at a constant 80° instead of 70° daytime and 65° nighttime like it was before. I don't know anymore, I feel like there are too many variables I'm trying to juggle all at once to figure out what's going on with these lately! Someone lay some knowledge on me!! Lol