Don't allow the soil to become super dry but don't keep it soggy wet either. Keep the pot near semi-bright light and you may well have a new plant sooner than you think.

I've had them go dormant for months at a time and then finally come back up. In a few cases they've been dormant for well over a year. As long as the tuber is not rotting it should regrow. But just to be safe sprinkle it with cinnamon which works great as an anti-fungal.

All are very similar to a plant that originated as Alocasia Amazonica. Alocasia Amazonica is a hybrid of Alocasia watsoniana x Alocasia sanderiana although some growers believe the plant was actually a cross between Alocasia watsoniana x Alocasia nobilis. The closest species plant is likely Alocasia longiloba which used to be known as Alocasia watsoniana. Alocasia watsoniana was sunk into synonymy with the Alocasia longiloba as a result of being published to science first. That determination was made by Australian aroid botanist Alistair Hay who likely knows more about Alocasia species than anyone else.

Alocasia Amazoniica, Alocasia Polly and Alocasia Frydek are commercial names(not species names) for plants that are almost identical. In the past it was also sold as Alocasia 'Maxkowskii'

My only suggestion would be to plant the tuber a bit deeper. I have a bed of them in my Exotic Rainforest atrium and not one came up this year. Last year the bed was full. I've seen this happen many times before so if the plant is slow to come out of dormancy don't give up.

The link might help and includes a second link which explains natural variation in aroid species. Natural variation is extremely common and the basic rule is just because a leaf looks a little different does not mean it is a different plant.