I usually get 3-4 days on 70 or 80 VG juice before i have to dry burn my coil and as a consequence have to rewick the build, it's always the coil that needs attention (just a burn not replacement), but it's not easy to reuse the wick from a build and cheap enough to just lob in a fresh piece of cotton. It'll depend on your build, but it would drive me nuts rebuilding everyday.
When the wick goes first it's because i'm letting the tank run too low before refilling, it's always the coil(needing a dry burn) before the wick when i'm paying attention.
If you're using a stock coil, refill sooner rather than later, once that wick is spent, the coil is spent and there's no fix.