It still looks ok.
Nobiles are water guzzlers. I've hardly been able to keep up myself this year.
If they go dry a little too long then they drop their leaves but the canes are still plump and should still be able to flower in spring.
Don't overwater now, the summer is practically over, the only reason my nobiles don't completely dry out is because I grow them in self watering pots and even then they were the only orchids this year that managed to drain their reservoirs completely a couple times and developed some yellow leaves as a result.
To me yours looks just fine still. It could have done with maybe a bit less drying out on the hottest days but not much to worry about imo.
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