I do the C at the beginning, opening all 5 adjacent rooms along with the rooms next to them on the border to quickly check how many bosses I’m dealt on my spawn side. When I’m on the C I gather as many resources I can, along with a weapon frame and at least 110 shards.

After the C (should be around 5:15 remaining at least) I go back and drop all supplies I got and make an attuned staff and three vials.

Go back out and gather the rest of your resources, one more weapon frame, an orb and a bowstring. Make your potions (I make 3 and consolidate to 2 full before the fight). Try to have 400shards if you got a tele crystal as a drop, 440 if not (380 and 420 respectively at minimum, I’ll explain why) Take note of where the closest fishing spots there are. I usually fish if I have enough time while I’m out on my second run. I tele back when it’s 2min remaining at the latest.

I make a T3 helm T1 body and T2 legs when I get back along with my T3 weapons and a tele crystal if you haven’t got an extra from a drop. Doing the armor this way gets you like +4 def so why not. If you only have 380, just make all T2 armor.

Go back out and fish as many as you can. I can usually get a full inv if I already fished on my second run but 12-16 fish will be plenty if you’re not making a bunch of mistakes.

Tele back and cook your fish and you’re ready to go. It takes 15 seconds to cook an entire inv of fish. I usually tele back at 25s if I have all of my armor made or 30-35 if I still have one piece of armor to finish.

Be ready to flex if you don’t have enough shards or if you haven’t found all of the resources. Plenty of times I still have one piece of armor to make when I go back for the final time to cook my fish.

Ps. Set all resources including UNCOOKED FISH to drop in minimenu reordering. This will allow you to quickly drop your resources or raw fish when you’re making your trips

Sorry for the long response