follow the past pattern and back test it.
you can trail the stoploss and move to target 2
Target 1 was based on the breakout over trendline with stoploss at 288. And when target 1 reaches trader can trail the stoploss near the traded price to minimize the risk and wait for target 2 as trader is already in profit. Ideally you shouldn't have bought it around 303 based on above analysis. Now, that you have taken the trade, let me give you some insight.
Now, if you check the hourly time frame you can draw a horizontal support line ~295.55, which was retested couple of times, also where the last candle was closed.
And pls also check the daily time frame, you can draw a support line touching wicks of the candles from 7th May. Ideally your stoploss should be just below that, 291.
I am unable to attached these two time frames here, sending it to you thru the chat.
short answer - you can keep the stoploss around 291 and wait, as it has not broken down the daily support line.
winning and losing is all part of the game, every trader goes thru it.
hope this will help.