When I forget to take it and realize it that night, I usually opt for #2. Missing a day or two isn't likely to affect your treatment whatsoever. Don't be complacent about it and you'll be fine.
Hairloss is a long-term process. Being a few hours off, or even skipping a few days doesn't mean your hair starts to fall out immediately. Just take it at night.
Just skip it. I actually skip almost every Sunday because I don't wake up till 2 or 3 in the afternoon from the night before. I usually take mine early in the morning around 7:30am. Sometimes I'll wake up by accident earlier and then I'll go ahead and take it, but if not, then screw it, I can miss a day.