Staking in more than one pool: does it diminish returns?

Hi, I apologise if this is a dumb question. When I first got in to crypto I was pretty much using Binance for everything, in this period I also staked my ETH with the Binance ETH 2.0 pool. It’s about 2/5 of my portfolio so not an insignificant amount.

I no longer really use Binance and would like my crypto to be more decentralised but of course that ETH is locked up for a while.

My question is: will I get less total yield if I began putting my newly acquired ETH in to a new pool, meaning my ETH is split between two pools? And therefore is it more advisable to just keep all my ETH in the Binance pool in order to receive the best staking rewards? Or is it fine to split.

Hope that makes sense.

Thanks in advance