Trouble eating again

Hello, my husband had Ivor Lewis operation here in nz 10 months ago…lately he has been struggling to eat and drink due to feeling full after a few bites. Hes now eating 50% less food in a day than he was 2 weeks ago. His weight is dropping quickly. Even water he is struggling to get down. Has just spent 3 days in hospital due to dehydration and anemia. Feeling better in himself, we have appointment in roughly 10 days to see GI specialist. Has anyone here had these symptoms due to a stricture ? If so, are these symptoms usually what happens when a “dialation is required ? Hes extremely thin.
Thanks
Deb