I'm one of Tron Enthusiast. but to reach ATH at this moment is very difficult. so it's up to you right now. if you want to cut loss all of them, just go ahead. from the previous history, Tron's ATH came one year after Bitcoin halving (2017). so I can't say and speculate more than this, until 2020-2021.
Many people put their hopes on Halving Bitcoin later, we can wait for each coin to reach their latest ATH, but for TRX I myself also very sure TRX will reach the latest ATH after Halving Bitcoin later. That's not too far between the current price and the previous ATH. So stay optimistic for TRX holders.