There's no actual commitment here. He could reverse again tonight. He signaled ongoing dissatisfaction with countries that had retaliated, so may well take further action there during the 90 days, which 90 days are, again, meaningless in that they don't bind him at all, and even if they did, he's done a bunch of things he's "not allowed to" and so far has gotten away with tons of it.
You're right. But as we see with TikTok, he loves to talk big but keep kicking thr can down the road instead of backing off. There will inevitably be more spats in the meantime (especially with the EU), but I wouldn't be surprised if he extends it more when July looms (assuming that congress bill is still struggling to pass).