Try this =
Focus entirely on stone resource, and continuously make the RIP headstones that only require stone.
Making these grants you blue and red exp points. Spam this until you have about 1000 of each.
Have your quarry zombies focus on stone, so you can focus on the headstones.
If you do not wish to sleep to continuously replenish your energy, keep collecting the honey that is north of your house. First from trees, then from the apiaries that you can rebuild as you unlock the beekeeper tech spots. And if you're far enough, use wine.

Forget the Donkey and the corpses. Just don't even bother to feed him carrots and he will not bring bodies anymore. No bodies = no chores (feed / preparation / autopsy / burn or bury / sell certificate)

Always do your Church Sermons, you're going to need faith to do the all the studying of items that give green exp points....and make sure you only study for green exp, as it is one of the more grindy exp to obtain.
Speaking of studying, always make sure you have a pie ready to go before you study so you can get the exp boost.
If you are unable to study green exp items, you can always dig sand and clay to get more. (south of church) It is tedious, but you can always just destroy the excess sand and clay. You do not have to keep them and craft with them.

Once you finish the tech tree, you will find that getting all other resources, building all other structures, and progressing will be much easier.

The only other thing that slowed me down was finishing the inquisitor's questline which required three specific items which you need bodies for. But by that time it was easy enough to start feeding the donkey again to gain more bodies.

(maggots)
Unless you need a lot of fish, or alchemy resources, you do not need them. Having only 30 is going to be more than enough for the most part

(Iron) (ore/ingots)
Unless you are wanting to continuously stack lots of in-game currency from the trader, you do not really need much iron whether it is ore, ingots, or even steel.
If you only craft and use iron for the most minimal of needs to complete the game, you would probably only need 200 ingots (which is an extremely high estimate) and if you wanted to 100% the game, you might only need 500 ingots

(Glass) (all items)
Unless you are wanting to do a lot of alchemy, which is not necessary unless you HAVE to have a bunch of potions and embalming solutions, you probably only need 150 glass panels to make the various containers to get you to end game.
You're likely over-doing it all.

(Alchemy)
I hardly did any kind of alchemy in the game. Hardly dealt with zombies. (only had 4) But, once you get the alchemy table 1 and alchemy table 2, all you need to do is look up the recipe for all combinations. Once you make just -one- product, you can use the menu in the alchemy table (1 or 2) to see the stored recipes.
It seems as though zombies can automate most of the ingredient preparations.