Solved
My only income for 2021 was from my T4E and rental suite.
Yes. Since you would have a lower net income than your spouse, you can claim the childcare expenses on your return.
Information on claiming childcare expenses, as per the Canada Revenue Agency (CRA):
Line 21400 - Who can claim child care expenses? - Canada.ca
Line 21400 - What payments can you claim? - Canada.ca
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