Is it OK to use Afrin nasal spray 1 time every 3 days?

Usual Adult Dose for Nasal Congestion
2 or 3 sprays in each nostril not more often than every 10 to 12 hours

Comments:

Do not exceed 2 doses in any 24-hour period.

Uses: Temporary relief of nasal congestion due to common cold, hay fever, and
upper respiratory allergies

Source:
https://www.drugs.com/dosage/oxymetazoline-nasal.html#Usual_Adult_Dose_for_Nasal_Congestion

I recommend you ask your Pharmacist, this is an OTC nasal spray and I believe the advice of a Pharmacist may be of help to you.

Information of the medication: https://www.drugs.com/cdi/afrin-sinus.html