Swapping into BTC/ETH at all time highs. Stupid idea?

My portfolio is made up of 65% XRP (Yes, I know). I would like to swap into other coins to rebalance, but this seems suspiciously like “Buying high, selling low”. Is it stupid to swap into BTC/ETH right now?

I already have some BTC, ETH, and a little bit of random memecoins.

I don’t want to invest in more in crypto, but simply rebalance so I’m not so heavily weighted in XRP.

Obviously buying at all time highs is generally ill-advised, but XRP honestly doesn’t seem to be going anywhere.

Any advice would be appreciated. Thanks!