You cannot sprint through every season and still expect your legs to trust you.

Some seasons genuinely require everything you have, and going hard through them is right. Making that the permanent setting is different, and your body keeps a record of how often you have asked for more than you had. Eventually there is a hesitation, a reluctance that shows up before the effort starts, because the system no longer believes the demand will end.

Look at how long your current push has been running and when it is actually meant to stop. If there is no end date, set one. Trust in your own effort is easier to keep than to rebuild.