Doctors abbreviate many words that they use when writing prescriptions. That is one reason that prescriptions appear to the uninitiated to be harder to read than they really are.
I would use "sz."
To abbreviate recoimmendation, you would use rec.
There is not a proper way to abbreviate the word 'consideration'. If you really do need to abbreviate the word, you could use the abbreviation of 'cons'.
Misc. You would use a small m if it is not at the beginning of a sentence.
You just did use the word colonize in a sentence.
Since that is not a word I would not attempt to use it in a sentence.
Some use 'hse'.
Use the whole word for clarity.
how would you use the word finished in a command sentence
1. you did just use that word in a sentence 2. if a doctor would use the word tumor in a sentence they would probably say "we need to remove the tumor from this persons body."
You could use Rx as an abbreviation
The word mores is not a word.