I know that feeling. Having kept ahead of my UK passport renewals in different countries over +40 years globe-trotting, I got busy these past 6 months and all of a sudden both my passports are due to expire in Oct and Nov 2025. No problem, I says, I'll do it on my next break. However, I have already fallen foul of the EU's rules on maximum 10-year passport validity. Both of my passports were among those that the former HMPO gave you 9-months credit for renewing early. So as far as immigration at Schiphol was concerned, and despite the printed expiration date, they "expired" last month and were illegal for EU entry.
Oops!