Given what many historians conjecture about the origins of Judaism, it is highly unlikely that there is a direct connection between Moses and Akhenaten. Attempts to draw parallels between early biblical figures and historically attested persons are often conjecture at best.

While it is difficult to know for sure, many historians and archeologists believe that Yahweh worship in Canaan was once henotheistic i.e. the people of Israel believed in Yahweh and considered him to be their god, but they did not necessarily believe him to be the only god. The earliest possible mention of Yahweh is an Egyptian inscription describing the "Shasu of YHW", the Shasu being an Egyptian term for desert nomads of northern Arabia and YHW possibly being a hieroglyphic representation of Yahweh. The interesting thing about this inscription is that it dates from the reign of Amenhotep III around the early 14th century BC, which is actually immediately before the reign of Akhenaten. If the inscription does refer to Yahweh as scholars such as Anson Rainey and Michael Astour believed, it means that there were a group of people connected to Yahweh as their god in a henotheistic sense even before the reign of Akhenaten.

I am not particularly well versed on the particular faith of Atenism as promoted by Akhenaten, but from what I have read it seems that many scholars believe that this faith was henotheistic as well. Before Akhenaten, Aten was a Egyptian god who was worshipped as a sun disk. Akhenaten may have attempted to purge Egypt of all other religious cults, but he did not necessarily believe that other gods, Egyptian or otherwise, did not exist. It is important to note that Henotheism was not unique to Canaan or Egypt. In Assyria for example, the god Ashur was worshipped as the patron of protector of the Assyrian people. Much like Yahweh, Assur is not considered to have a mother or father and had a unique status.

Ultimately we don't know if there is any historical figure in particular who could have served as a sort of "proto-Moses" for the Exodus story. It is worth noting that Egyptologist Rolf Krauss has made the claim that there are parallels between the Biblical Moses and the 19th dynasty Pharaoh Amenmose. https://en.wikipedia.org/wiki/Amenmesse