No two situations will be identical.
I have a few
e-liquids that require my coil replacement after several wick changes - about a month.
Others I use have had the same coil, working great, for over 4 months.
Simple enough to check and decide:
Is coil heavily crusted? - Correct wicking, change more often.
Does coil Dry burn to clean easily?
Inspect - Coil look to be in good condition? No heavy pitting/Rust forming(keep moisture from coil) Strange coloration.
Is coil heating properly? Responsive / center out - Adjust if possible
Are Ohms holding near original build? Check/tighten connections.
If everything looks right and everything works right - Continue using the coil
If a problem is evident - Replace the coil.
