You should be able to get a second credit for BLG 235(it is a 6 unit course), I wonder if it's equivalent for BIO 3U03/3UU3? Or KIN 1Y03/1YY3.
As for finishing the course itself, I know a girl who had it done by mid-june (And started in April). She had also taken some physiology courses before though, so that probably helped. I'm in it right now actually as well
, so feel free to message me!