DG you are in big trouble
and fire that guy who gave you that info that it is OK to trade in a TFSA.
The CRA has done audits for people who trade too much.
Enjoy this link and unfortunately, you will NOT have a good weekend after you read it.
You can also google " CRA , TFSA tax audits" and have more sleepless nights.
YOU CAN'T TRADE in the TFSA account.
https://www.mondaq.com/canada/tax-authorities/402122/the-cra-tfsa-audit-project-who-gets-audited-and-why