Viva Do you mean cash only or total account? Last year at one point I was down to 18K cash account not including positions and schwab let me do more than one a day.
The FINRA pattern-daytrade rule says 3 intraday-round-trips in 5 trading days is allowed (or rather, 4 roundtrips in 5 days labels you a "Pattern Day Trader"). So you can do more than 1 per day, just not more than 3 in 5 days.