That depends on whether you decide the nic is too strong, the flavor is too strong, or both. If it's both, the solution is easy ... take a small amount and cut it with PG or VG, until you find a good ratio, then cut the rest using the same ratio. Maybe start with 3:1
juice
G/VG, and adjust from there.
Cutting will reduce both the flavor and the strength, so hopefully you decide both are too strong.

With a 3:1 ratio you'll end up with 27mg nic. Cutting with VG will result in lots of vapor, less
throat hit, and probably reduce the flavor more than PG would. Cutting with PG will preserve the throat hit and more of the flavor.