how are people getting through these stages so fast? just took me like 6 months or sometime to super ascend for a 5th time
By the time you hit SA6 you should have some pretty decent artifact wealth and at least a couple +%AP boosts. Those make a big difference in both getting your AM up to where it needs to be faster and also reducing the required armies from AM to clear a level, as well as getting you to the first market faster.
In general, a level should look like*:
- cache surf + CRA to first market (<1h)
- drain market, buy mercs and repeat until you have all Hospitals and Markets (~5-10m)
- upgrade hospitals if needed (0-4h)
- clear the remaining 80-90% of the level (~5-10m)
On SA1, you won't have a good enough AV artifact to do this, and even if you did, you would come up short on armies anyways, because your AM isn't high enough. That means there's another step after the last one above which reads something like "- wait on army camps/drafting to fill the army shortfall (hours, days, weeks, ...)", which is by far the slowest part of an Idle level. This is why AM is the most important advancement to take and one of the reasons why A$B is one of the most popular artifacts (and almost certainly the best first Insane) - they're the most effective way to shrink and eventually eliminate this step entirely. Once you get there, you too can start knocking over levels in basically the time it takes to upgrade the Hospitals.
One wild guess: Are you dumping a whole lot of AP into IACP? If so, that's a trap and will be a big reason why you're going so slowly. IACP seduces you in the early levels where it still makes a difference, but it rapidly becomes irrelevant (moreso the later you get in the levels) and drains AP that could have been spent on AM.
* The early levels (before Far Land) have mediocre to non-existent cache surfs, and the very early ones lack Markets entirely. This makes them a constant boondoggle and generally problematic/slow. For a 6 month long SA they're probably a drop in the bucket for you still.