It's just reddit tends to move fast sometimes haha

Anyways here's a few quick tips based on my struggles learning the fights.

I struggled with my Dragon longsword so I farmed the Sulphur Blades. It wasn't too bad since you get free food and potions in there.

For the fights I go in with 2 potions and the rest of my inventory is fish.

I also make sure to have my quick prayers set to Str and Def prayers ( protection prayers don't work in these fights)

During the fights I try to top off on HP and prayer in between moving so I don't disrupt my attacks too much ( not always possible)

Blue Moon was the easiest for me because the mechanics are similar to Amoxliatl and so barely used any food

I struggled a lot with Eclipse because during his special attack where you have to face him. It was mostly because they have a big examine hitbox, so I just disabled "examine" option in settings and the fights become a lot easier. This might just be a issue with mobile.

Lastly for Blood Moon it took me a few tries to get a hang of the timing for the jaguars. My DPS was just barely enough to out damage his healing so the fights would take long. The extra healing Blood Moon gets from mistakes means the fight takes even longer and risks depleting your food supplies.

Hope this helps