As you have cylindrical power in both eyes, start using glasses throughout day, not only during reading or writing
reduce your screen time
take break every 20min
use lubricating eyedrops (CMC 0.5%) one drop three times a day
Next Steps
if you dont feel relieved even after glass use, i advise you to go for cycloplegic refraction as in this age prescription could be different under cycloplegia
Health Tips
be careful with medicines you are taking
take proper consultation for such medicines