Let me give you some ideas of how to play over the changes in the blues. Using the framework of the G blues scale. Targeting the major third of the G7 C7 D7 chords. Just adding the chord tones to the pentatonic scale will make your solos sound bluesy. If you focus on the chord changes when you practice it will sink in. Here is a link to this awesome backing track. https://youtu.be/NAdy2TfdgDM
-Video Contents-
0:00 G7 blues jam and lesson intro
1:09 G blues scale
1:35 Playing over the chord changes in the blues
5:41 Target chord tones/ Target the major 3rd of the G7 C7 D7