So, I ran ToEE in Hackmaster oh these many years ago. the T1 portion of the crawl is really quite good. I like the T2 to T4 parts much less.
First, I rebuilt the shape of the floors of the Temple to suit my needs. They wound up completely different.
I’d honestly go through and rebuild the treasure in lairs- the temple itself is not such a bad place to get random stuff kicking around, which I would mostly leave as is.
If you feel like leveling is going too high at any given point, I’d dial the coins in a given trove back a decimal. Assuming a party of five, the Temple more or less figures you’ll be level 8 by the time you’re done. My crew messed up and summoned the full force of the temple onto their heads around 4th, kipped out and never went back.
Assuming 5 PCs, doing only the Temple and no side quests, there should be about 600,000 xp in the dungeon, which translates out to about 500k gold and 100k monsters. I’ve no idea how it actually wrangles out, but a quick perusal of level 4 for a few pages has me counting over 50k in gold fairly easily.
If there’s not enough treasure to advance, then your guys may need a side quest or six. My party for my current Dwimmermount game have gone afield to a few nameless microdungeons, the ruins of a dwarf citadel, and a bandit-infested ruined city just because Dwimmermount got boring.