I see your point, but one thing is spoken speech, another one is written. Here we deal with written text. So in the absence of examples argumentation towards "gasmi(l)ch" is weak. It is more probable that the scribe would omit a space accidentally (the pen just slipped, I don't know) that that he would omit a meaningful letter.
Your discourse can be developed (as I believe) in a slightly different way though. If a letter (or letters) were omitted, they were most probably omitted in the end of the word, which might have been natural for word forms (after "so nim" we expect accusative) or for variants.
Luckily, woerterbuchnetz.de supports wildcards. So for mich* we find:
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One immediate match is "miche" = "Mittwoch".
Goat's Wednesday?
I don't know.
Anything else worth looking at in this list?
Your discourse can be developed (as I believe) in a slightly different way though. If a letter (or letters) were omitted, they were most probably omitted in the end of the word, which might have been natural for word forms (after "so nim" we expect accusative) or for variants.
Luckily, woerterbuchnetz.de supports wildcards. So for mich* we find:
You are not allowed to view links. Register or Login to view.
One immediate match is "miche" = "Mittwoch".
Goat's Wednesday?
I don't know.Anything else worth looking at in this list?

