LayoutLMv3 for tokenClassification-within-a-table/Table Extraction

I’ve tried using LayoutLMv3-for-Token-Classification to extract entities from tables.
Trained model doesn’t perform well on new data. It doesn’t seem to correctly associate column headers with values in the column, as there are mis-classifications on some columns in new data.

Can LayoutLMv3 be used, or augmented in any way to be used for table extraction?