Yes, you'll be fine. Every 2-4 days ensures his sperm are healthy and being replenished with healthies. Try to keep to the schedule, you can obviously take a few days off for AF. As soon as she leaves town, get on to an every 2 day schedule. Then, at first +OPK, try to get in 3 attempts in 24 hours. Like that night, next morn, and next night.
I'm so sorry for your loss onthepond :(