I'm guessing you don't feel noticeably older right now than you felt two months ago. So if the pill merely slows aging, rather than reversing it, it's not likely you'd notice any change.
You might examine some of the animal studies for, say, stem cell therapy or senescent cell clearance. Benefits are rapid and very evident for things that do actually work. Even slower items like myostatin blockade to provoke muscle growth show sizable, obvious benefits over a period of a few weeks to a few months.
FTFY