Erm, I wouldn't advise only having 3 packs today TBH. You need all 4 for full range of vitamins & minerals, as well as 500KCal being necessary for weight loss.
5 packs is not a problem as the extra 125KCal will make no difference to your weight loss, and there's virtually no Carbs so no chance of taking you out of Ketosis.
I would recommend still having all 4 packs up to your meeting - if necessary you may need to have and extra pack after the meeting if you are running out, but still have 4 each day.
You may well find that your LLC will give you an extra pack to catch up - I know mine did to a couple of people who had made mistakes/ruined packs.
Ignore yesterday, stick to today with all 4 packs as if nothing had happened.