Corn is bending...

I'm new to gardening especially corn. I have stalks growing but they keep bending over. No roots showing though I will be adding soil as I've read today that may help. They are planted in blocks but seem too small to support each other. I put two cords to help the most out rows stay closer. Should I steak the corn? I have about 20ft long by 4 ft wide and they are in short rows so about 15  4 ft long rows. About 4-6 stalks each. I have the cords to help support running the length. Should I put some running the width or individual supports?

I also have some bending over. Most have recovered and one is bent really badly but trying to recover. I hadn’t staked any of them yet. I thought about it but I think I’d snap them so I just let them go.

Usually here when it starts falling over it is due to some weird weather-- rain followed by wind. They usually recover pretty quickly, but if you have blocks maybe just "bundling" them might be enough (tie something around the whole block) til they get solid enough to stand up on their own. I also have broken them trying to individually stake them (tied them up then more wind meant they fell again, broke).

You can help to keep them straight if you put a stake at one end of a row and another stake at the other end. Then just run a string nice and tight between the 2 stakes and let the corn rest on the string thus keeping them upright. If your rows are close enough you may find that you only need to do this for every 2 or 3 rows. I just helped a friend with this exact problem and the string idea worked great. If you put in enough stakes and enough string all the corn will keep perfectly straight. At least this way you don't have to stake every single plant.