W + Shift G + R + [Caps Lock A] + ' + [Caps Lock S] + Shift U + [Caps Lock F] = ગુજરાતી
Why not just switch to a modern font? Here is the comparison table: Gopika Gujarati Font Keyboard Layout
It is important to understand when to use Gopika and when to use Unicode (e.g., Shruti font ). Gopika Font Layout Unicode (Inscript) Layout Legacy / Non-Unicode Unicode (Standard) Look Artistic/Calligraphic Simple/Standard Compatibility Limited to computers with the font installed Universal (Mobile & Web) Usage Print/Designing Email/Web/Social Media W + Shift G + R + [Caps