Unfortunately I am in the same exact situation. It is quite annoying how awful my timing was but I tell myself I needed a place to live at the time and I paid the market rate at that time. I tried to ask the PM but they just laughed, and rightfully so. A lease is a contract, and although your LL may say no, it doesn’t hurt to ask. They probably won’t lower your rent, but maybe you can get a free month or something.