Not sure what you mean on that. An original buy on mvp would be an IT play, lasting weeks to months. There very definitely can be drawdowns before signal completion, but to date, 10 yr backtest, all have ended at a profit.
You CAN time the market!
But only after you trash the big 3 myths.
Myth 1 - its possible to get every point of every move
...Myth 2 - you'll never have a drawdown
......Myth 3 - you'll never have a loss