Bitcoin recently touched the upper Bollinger Band at the 88,600 level, which is usually the ceiling for a rebound. The previous high of 89,355 has not been broken yet, and the signs of two failed attempts to push higher and then fall back are already quite obvious. The bullish momentum is clearly waning.

Looking at the trading volume reveals the problem: the bars are getting smaller, which essentially means there's no strength behind the rally. The price is climbing but the volume can't keep up. This kind of price increase with no volume is hard to sustain and is likely to be knocked down later.

The RSI indicator also shows signals: the value is stuck at 57.2. Although it hasn't reached overbought levels, there's a detail—when the price rebounds, the RSI surprisingly doesn't make a new high. This is called bearish divergence, indicating a shift in the balance of power between bulls and bears. Coupled with a bearish engulfing pattern on the 1-hour candlestick chart, the bears have already started to take control.

The short-term trading strategy is as follows: consider short positions in the 88,800-89,500 range, with key support levels at 87,800 and 86,800 below.