These schemes are effectively a lottery until the latter stages. Some have had over 25,000 applications for 150 positions.
Given that TUI have discontinued their programme for 2026 and other carriers such as BA are yet to announce if their next intake sizes are being adjusted given the current market. These schemes are only going to get more competitive. If you haven't had at least a trial flying lesson yet in an aeroplane, it'd be worth getting that done sooner rather than later.