Hello everyone! Could you please recommend someone who has consulted ...

Hello everyone! Could you please recommend someone who has consulted with sleep consultants? Who would you recommend? My husband's sleep schedule went off after three months of travel. He wakes up at 2-3 in the night and sits for 2-3 hours or fidgets. He just can't fall asleep again. And then he sleeps. We were advised to remove the second nap, we tried but it was a disaster. We thought maybe acclimatization, but we have been here for over 20 days. We extended the first VB period, then it seemed normal and we removed the second nap, so he lasted until 9 o'clock, then he woke up at