General

On my lv 155 lumi gollux mule with clean cra gear, emp gloves, cape, shoes, and shoddily scrolled faf rod I have around 40k buffed.

With that range I have a routine that makes farming coins on low range lumi very simple. For the first shoulder use the tips from the above posters(stay towards the middle, tele to the branches to avoid the ohko, etc.). Next you do the abs with equilibrium to easily ender it to death. When you're about to enter the second shoulder, use that affinity switch skill to gain another round of ender spam. Use your infinite death scythe for when the mobs spawn. Those cooldowns will recover on your way back to the gollux parts again.

Ask me for help?
The bad thing about tele-based classes is that they can tele themselves into danger. With the falling rocks try to eyeball where you will land if you tele and use that to avoid them. And staying near the middle is very helpful because the push pushes you almost half the length of the platform. Using snowshoes help because it keeps your from sliding off even after pushed. Don't jump since that will definitely push you completely off, but I doubt you're jumping if you're a lumi.
Try to raise yor range as much as you can with free equips from bossing daily, if you can afford that.

you shouldnt have too much problem with the shoulders, just attack and when the branches come out teleport there or u can be 1hko in the bottom, try to use ender everytime u can to finish the mobs.

When the branches spawn
the shoulder have an attack that 1 hit if you are in the ground, you need to stay in the branches
Always stay in middle

Avoid the falling rocks, they 1-h ko you.
Can't think of anything else besides using the hyper to spam equi. You can also see if the hyper skill bind works.

Stay close to the middle and just attack. Focus dodging stuns over getting damage in. Once the platform of branches spawns, sit on that to avoid getting 1shot.