Altcoin sentiment is so bad that a V-shaped reversal almost feels logical.

But historically, crypto bottoms are rarely sharp. They are usually long, rounded, and painfully boring.
That is the key difference now: sentiment is awful, yet people are still here, still hoping for bull continuation. Compare that with early 2022, or even worse, late 2018, when the market went flat for months.
Having said that, range low accumulation makes the most sense to me.
DCA slowly. Spread your USDT deployment from March to October.