Can I grow an Autoflower on 18/6 for a month then 12/12 for rest??

Hi I have just started Dinafem's Original Amnesia and Fruit. Both are feminized and autoflower. I have germinated those and also Barney's farm Pineapple Chunk and Samsara El Aquimista. Both are feminized as well, just not autos. I was thinking of doing a month in veg for the Pineapple Chunk and El Aquimista. That would mean I'd be switching the autoflower's to 12/12 a month in also. Or I could grow the autos on 18/6 till they're done and let the Pineapple Chunk and El Aquimista veg for 2 months?

Let me know what you guys think! Any help is appreciated!

yeah the autoflowers shouldn't be on 12/12 so if you let them finish on 18/6 they would be better off. if you had enough light and space you could veg til they finish and then flower the rest

I have grown Barney's PC.. It's a very long plant. I would suggest in my best opinion that you veg for at least 7 weeks. Would be better if it were 8. Also, PC (pineapple chunk) once started in flowering at 12/12, once flowering is actually noted, go to 16/8.. Seems to like it. Also make sure that you 8 hours in dark also happen to be the coolest times of the day.

Alright I'm going to go ahead and run 18/6 for 2 months and then once the auto's are done I will Flip 12/12 for the normal females. I will probaly end up having to trim them up, lst, and top them in order to fit my space provided