2-3-4 schedule for 8 month old

So I'm having a heck of a time working on a 2 nap schedule for my LO.

When on 3 naps a day, The last nap of the day kept getting later and later so I know she is ready for 2 naps (plus they're 30 min each and I know her wake times need to be longer now). I have tried pushing her first wake time out longer (2.5-2.75 hours) and sometimes it works (1-2 hour nap) other days it does not (acts overtired and sleeps 20-30 min. or in the case of today, 10 min 😑). And her second nap has been pushed out longer to 2.75 hours and it usually is always 30 min no matter what.

Doing research online, I hear of this 2-3-4 schedule many babies with 2 naps have. (For those that dont know, 2 hour wake time to first nap, 3 hour wake time to second nap, and 4 hours until bedtime). Many people have sworn by it. So I wanted others opinion. Do you use it? Does it work perfectly for your LO?

Thanks in advance 😊