I agree with the general consensus above bro. It’s really quick for lethargy from m sten (even sdrol didn’t really hit me for a couple of weeks) and m sten didn’t at all to any great degree - but are you cutting or recomp or bulk? Deep into a cut it would probably impact a bit quicker.
that said I also personally think for most people that’s a lot of ai. Absolutely everyone responds differently and absolutely there are guys who aromatise like crazy and need more than 12.5 Ed but on the flip side there’s a lot of guys (imo) who would need either no ai or less than 12.5 twice a week on that cycle. Unless you’ve have bloods taken previously to know you need that amount then I would
be dropping that dose way down (exem is so fast acting I literally wait for the nipples to get that first feeling and then dose 12.5. Normally once a week for me personally).
incidentally I would get bloods right now so you can get some clarity on it. You’ll know for future then.
the biggest issue you have asking the question you’ve asked is that we have such different responses it could be either answer (and for some guys on here it will be) - sadly it’s not a one size fits all game brother
good luck sorting it