Apple Watch awful battery life since 7.3.3

My watch used to have 30% battery life when I would put it on to charge when I went to bed. Since the latest update, I get a low battery warning every night around 8pm. I haven’t changed any settings and the usage hasn’t changed, it seems to be related to the OS update. From what I can see, others have been experience similar issues. Is this a known bug and is a fix in the works?