I had a period with double child care payments when we had to find a new provider. can I claim child care payments for notice periods?

There is a maximum amount you can claim for child care expenses, therefore not sure if you would fall into the category of maximum amount during notice periods. 

Please review the link below from the CRA on maximum deductions:

https://www.canada.ca/en/revenue-agency/services/tax/technical-information/income-tax/income-tax-fol...

Also (if needed) here is more information on how much you can claim and how to enter them into TurboTax: