did you get paid at least minimum wage during this period? -Yes
Did you work at least 30hrs/wk during this period? -No
Is your employer willing to state in their reference letter that you were considered to be employed during this period? -Yes
Did you actually perform activities that would be qualified as skilled work under the NOC system? -Was getting trained to be
how do you think?
Since you were paid a normal income and the employer will write one reference letter for your employment period, I think you should be fine for counting this towards your work experience.
However, If you worked less than 30hrs, you won't be able to count this period as full-time experience - you have to count it as part-time work propertionally.
30hrs/wk is considered to be full-time by CIC. Let's (hypothetically) say you were working 15hrs/wk:
You would only be able to count each week as 50% - so if you were trained for 4 weeks, it'll only count for 2 weeks of experience.
Regardless, most people like to at least clear the threshold by a few weeks, so the Officer's decision won't come down to individual working days. I would recommend just waiting till January.