What would happen if I used more than one coat per day of nail protein?

I just removed my acrylic nails yesterday because me and my dog got in a little fight. So I ended up breaking a couple and I wanted to get longer ones anyway. I’ve been trying to strengthen them so that their in good condition when I get them redone. I have two different bottles of nail protein polish, different brands. One bottle says not to apply more than one coat per day…why?