Root canal treatment takes single sitting to multiple sitting (4-5) depending on the infection present.
Next Steps
Let your doctor decide because they are evaluating the condition. Have faith on doctor. once your infection is resolved properly they will complete the rct.
Health Tips
For detail of rct procedure i m mentioning some word search on google for more details.
1.Access opening
2.BMP
3.OBTURATION
4.Capping -it take 2 sitting