My immediate thoughts are use a different mic position,
Or even a different mic, for recording
That demphasises bass frequencies.
..or EQ in your DAw mixer to thin out the tone of your guitar.

Btw My 6 string banjo has a very solid bass end.

Now, as I believe in the power of new guitar purchases,
One solution is to treat yourself to a classic thin line semi acoustic electric with F holes based on Gibson 335 body
Eg epipone casino, epi Sheraton, epi Riviera, or any other brand..
That will definitely have a much lighter acoustic tone for close mic recording.
A good resonant solid body electric will have an even thinner acoustic tone for close mic recording...