If he doesn't do well in the 1st half of the season, it's not likely he will do well in the 2nd half of the season either because the pressure he faces in the 2nd half is usually bigger than in the first half. It's a long season next season, and the risk of next season's programs is much higher. I think he would give ok performances next season.
The relationship between stress and performance is inverted U-shape. He gives good performances when he faces optimum (moderate level) pressure. He gives sub-par performances when the pressure is too big or too low. This applies to everyone. (There is no such thing as nerves of steel. If someone gives a good performance, it means the skater only faces moderate level pressure, not extremely high pressure. Some people are lucky to feel optimum/moderate level pressure at the more important competitions like WC and olympics, while others are not so lucky. Nobody performs well under extreme pressure.)
https://explorable.com/how-does-stress-affect-performance
It seems that the optimum stress for Yuzuru almost always happens at GPF. GPF is the 2nd most important competition of the season. There are usually no favorites go into GPF (except in 2015) because none of the top skaters have yet competed against each other in the GP. So the pressure on Yuzuru at GPF is actually at moderate level. Once he does well in GPF, the expectation and pressure on him becomes much bigger when he competes in the Olympics or WC. So it becomes much more difficult to perform well, especially after giving a relatively good performance in the SP. (In fact, many top skaters perform well at GPF, the first time all top skaters compete against each other, but can't perform well at WC because they become the favorites to win WC, and the pressure/expectation on them at WC goes over the optimum level.) I think the pressure at national now might be too low for yuzuru. Once Machida retired, Yuzuru doesn't have any rivals at national any more. I think now he is too relaxed at national. Before Machida retired, Japanese national was like a mini-worlds, similar to GPF. Maybe Yuzuru will be lucky to face optimum pressure at WC next year.