I opened 1000s of bronze, dozens of those event eggs and 32 golden eggs last time to still be 6/8.
Then the new eggs you get off the specific companion were put in game.
Took me about 20 geode runs to finally get 8/8. not sure if you have tried farming the new eggs, it's worth a try.
i can happily farm thousands of world bosses per week in shadow towers and not get bored but endlessly farming bronze eggs only to waste resources hatching them to get nothing, so in the end all that you came out with is less resources than you started and hours of time gone lol. I'm not bothered really, Trove does a really good job of punishing players who put the most time and effort in. hopefully future developments have big changes for the game