Quick question about rrsp contribution and " tax savings" on income tax.

With pension adjustment box 52 on T4, this affects contribution room.

if 2021 contribution room - pension adjustment unused space = 7000 and it was maxed.

and if ; 2022 contribution room - pension adjustment unused space = 3000 and IF i max that,

will my tax deduction be the same as previous year because i also maxed it out or less because its 4000 less then previous year.

logically i think it will be a smaller deduction , if i could put more i would, but will be penalized .

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any info or links for me to further my knowledge on the subject would be much appreciated .