Here’s how to find the exacty same note on an adjacent string using visualisation.

The 3 semitone shape (3 frets apart on the same string) is very widely known.  You can make use of this, to visualise a note three frets higher on the same string, and then visualise a small jump of two frets higher (towards the guitar body), to accurately move by 5 frets in total.  Then cross strings to the lower pitched, adjacent string at that fret, to find the exact same shape (apart from the G,B string pair, where the jump is one fret rather than two).  The same idea can be used in reverse, to accurately move lower by 5 frets (towards the nut) or 4 frets for the G,B string pair, and then cross strings.

Watch the video