I have done this before with autos you can check out my diary here
growdiaries.com/diaries/129779-grow-journal-by-m0use
If your goal is to make seeds you need a strong dose of colloidal silver min 40ppm, STS or silver thiosulfate works much better.
you need to spray a section of the plant non stop till male pods start to form and then let them develop. I collected pollen and saved some in the freezer as well as used a buch fresh. It was still good when I defrosted it and I made lots of seeds with my plants.
In fact they where popping up all over the place this yeat from all the seeds that feel out when I was handling them.
You will want to let the seeds mature on the plant for min 4 weeks from the date of pollination, and the plant its self will not be that great for smoking as it will need to ripen way past its time to make the seeds. Plus the parts sprayed with silver are to be chopped off and never used for anything but pollen production.
If you do this in the future its best to let one plant start 2 weeks before the other and then spray down the new plant to be a pollen donor, when it pollinates the other plant it should be in peak flower at that point and give you a good amount of seeds.
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Best Of Luck!