As long as the FD can either be cashed any time, or the three months is BEFORE you would be travelling to Canada, that should be fine. Be sure to include bank statements for a few months, or receipts for items you sold to make the cash, to show you had the money before putting it into the FD. Otherwise, you leave it up to the VO's imagination to think the money might not be yours, you borrowed it and put it into an FD thinking you could avoid providing 6 months of bank statements. What wouldn't make sense to the VO is why NOW you suddenly put that money into an FD when asked to provide POF.
The fewer questions you leave for the VO to answer, the safer you are. Best way to avoid having to appear for an interview.