This is exactly my plan... I've got exposure in BTC and a number of alts, mostly high cap, and am expecting two alt-seasons before Feb 2022... in the middle of the first alt season I'll cash out of alts and put it in Bitcoin... and then purchase alts again before the second alt season... and then repeat the process and cash out of those alts when they've hit their all time highs and cash out into BTC again... and then de-risk a little into fiat to hopefully pay off some debt.
Continuing of course to DCA into BTC and ETH during the bear years.