So just in case anyone needs this info, I contacted revenue quebec. The box J is how much your employer paid for the insurance for you. My letter was how much I paid, however my employer did not give it in time for it to be on my tax forms.
The amount you pay out of pocket (the amount I received in the letter) should be box 235 on the releve 1 or box 85 on the T4.
According to the agent I spoke to today on the phone, I should manually put in the amount to box 235/85 myself.
Also shoutout to Revenue Quebec, who I emailed Sunday and was called back on Monday.