I love the ukulele. But it is also very fun to occasionally switch to that acoustic guitar sound without having to learn any new chord shapes.
Here is how you change your tenor guitar to play like a GCEA ukulele...
Start with a standard set of tenor guitar strings (CGDA - low to high). Keep the A string as is. Tune the D string (slowly and carefully) up to E. Move the G string to the 4th position instead of the third.
Then buy a set of standard guitar strings. Take the B string out of that set and tune it (slowly and carefully) up to C.
That's it and it will sound good.
Bonus material... If your tuner is a uke tuner, it might have trouble recognizing the low G (mine does). Tune the A E and C as normal and tune the G by playing the fifth fret (making it a C) and tuning it also to the C.