Yes, if you over-contribute to your RRSPs, the amounts will carry forward so you can claim them in a future year. But you would be liable for the 1% penalty as long as you are in an over-contributed state.
This CRA webpage explains how to deal with an Excess Contributions: https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/rrsps-related-plans/contribu...
