Hang in there Mike, I've been playing music for 32 yrs, stringed instruments for 25 of that, and guitar for 10. There are watershed moments in learning this instrument that will give you the encouragement to move onto harder things. In the beginning it's especially tough because you may doubt your ability to master a technique.

Try breaking down the scale into 2 or 3 parts, for example instead of playing G as

E------------------
B------------------
G------------------
D------------2-4-5
A------2-3-5-------
E--3-5-------------

take a little break in the middle

E----------PPPP------------
B----------PPPP------------
G----------PPPP------------
D----------PPPP------2-4-5
A------2-3-PPPP-3-5--------
E--3-5-----PPPP------------

Do little things very slowly, and then increase the speed of the little things....it's tough to try and play a new 6 or 8 note sequence, we can memorize things in our brains very quickly, but muscle memory take far more time and repetitions