If you're using TOS, you can set alerts to notify you when certain condition is met. It could be MID price of the options you're trading or price level where underlying is trading at.
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Keep in mind, that price level will change over time as this call option will decay.
Either way, however you get there really doesn't matter. Setting GTC stop loss orders on options is a great idea on paper, but it will get you bad fills and a ton of slippage in practice.

Setting a set of alerts will alert you that something might need to be addressed (by some yet-to-be determined method), and would do you well in avoiding "bad fills and a ton of slippage" from GTCs constructed on a single metric.![]()
Hi All -
Does anyone have any input on placing a stop loss when it comes to options? For example, placing a stop loss on an option on a simple long call or put. NOT on a multi-leg option strategy.
Does anyone recommend watching the UNDERLYING chart and placing an imaginary stop loss on the underlying. After that comparing what that underlying stop loss would be equivalent to the price of the option?
Thanks in advance.