Have you reread your contract? Is it listed under the ad hoc things. I would get rid of the client. He’s not paying you what you deserve he’s asking for services that are inappropriate and only gonna behave. Worse from here. He’s pulling a fast one I would break off the business relationship. I mean this is shockingly inappropriate on his part.
Are you sure it’s not the other way around? Money dropped off so you started to feel less motivated? I know money motivates me if it’s enough of it.