You must think about this dude as there is a possibility for ethereum to break another ATH again soon. Think about that.
Even bitcoin is coming back to the bullish mode too.
I wonder if Ethereum will have a small dip or something in able to buy back after selling today OP would definitely gain some profit but it would take some time to buy back the dip IMO.
I think what you mean is OP need to diversify his money to Bitcoin and Ethereum at the same time. Welp, if OP have some more money then he might do that or he could just split his investment in Ethereum to Bitcoin if he's going to sell some but it isn't the right time yet to sell. I hope OP gets our point.
He wants also to diversity his portfolios into the another small-cap coins like top 100 CMC maybe