RNG hated me!! unable after 8 attempts for any of these starts to work - went to another source: successful using Mechanical Pandaren Dragonling 1,2,2 (as suggested) then Rabid Nut Varmint 5000 2,2,1 = Extra Plating once, Rabid Strike, then Thrash until Azerite Geode died. Used Rabid Strike on Azerite Elemental then pet dies. Then the LifelikeToad 1,1,1,: using Frog Kiss, Healing Wave, Frog Kiss, Water Jet, Frog Kiss, finally got my win. (edited)
There is a lot of rng involved in this one. What worked first try for me was switching out the yeti to a pocket cannon with frost shot and extra plating. Using extra plating and then just frost shot until last pet dies.
The tinytron part didn't really work out for me for whatever reason. I went with Lifelike Toad as second pet instead and just spammed Water Jet until the toad died, then switching to the yeti as per the guide.