We probably have until January 2022, but everything afterwards is no man’s land, where only the desperate degenerates are.
I'm not sure what "retrace" you're referring to, but given how optimistic the market is right now, the first bitcoin ETF will do a lot of good. I'm sure the market will come up with plans to extend the optimism to that. Any crazy bull run is exciting, wait until you have ATH at 73k6 before there are days of slight drops.
Q4 is very promising for a crazy price increase, Taproot launch in November... the most important time for the market to enter a new journey will be.
I don't think this bull market will end so soon as most of the time, bullish season will extend up to the end of the year. So i'm very optimistic and motivated that i should not sell my coins right now because there might be better prices at the end of the year. But i'm not saying that this is not a good time to sell, of course it is, but if you consider better profits, then maybe wait for a while.
However, we should also be cautious with how the market moves. There might be bull trap along the way that will make us decide to start selling our coins. The whales will greatly benefit from it. So always be careful and never jump into decisions that you might only regret in the end.