Dear concerned,
It would be the right time to save your tooth if would go for treatment at the earliest.
Even though the tooth is not paining, we would insist you go for RCT. The purpose of the tooth is to help in grinding, your teeth and in this case it is not serving the purpose.
Next Steps
visit dentist for possible treatment options.
avoid using tooth pick and try not to chew anything hard from that decayed tooth side.