The market is falling sharply, I see signs of not healing, capitalization is withdrawn, should I continue to buy in the top 10 coin or should I pin down USDT and wait for new move? 
It is better to be out of the market. To be in USDT or USD and observe. This will prevent unnecessary losses. You will have time to buy coins again. It is important not only to get income, but also not to receive losses.