Yes you can use the two drops at 5 minutes interval.
Kindly use cold compresses over both eyes.
Soak cotton in refrigerated water and squeeze it and then apply over both closed eyes with light pressure so that the cold temperature reaches the inner aspect of eye for 5-10 minutes 3-4 times a day.
Blink frequently.Relax eyes every 20 minutes away from the screen by looking 20 feet away for 20 seconds.
You can refrigerate Lubrifresh eye drops and use them - one drop 4 times a day for one month apart from your other two drops.
Health Tips
Avoid over use of mobile and laptop.
If you do not have any spectacle power then wear a zero power spectacle with Anti reflective coating/blue cut lenses while using laptop /mobile. Use photochromatic glasses/sun glasses while going out in the sun.