You can collect as soon as possible because the amount to be able to staking ETH at least you need have around 36 ETH. That is large amount for me, I can't buy all of them. ETH is good coin thus far, I like the developer of this coin because they still to update against ETH system and their intention are to make ETH become useful for a lot of people. And now they will launch ETH 2.0 and many people have considered that this the latest update will bring a good move for its price.