It is impossible to predict when bitcoin will reach the new ATH. Maybe it will not happen in a month or two, but it is certainly possible. An exact description when it is difficult due to large price fluctuations.
It's pointless to even focus on ATH's, unless you're a trader looking to flip your investment. If the market has taught us one thing throughout the years, then it's the fact that main ATH's never reflect the market's progression and Bitcoin's utility, and for that reason will not be sustainable. It has been like that for years, and will continue to happen for may more years to come as long as speculation remains the main factor in this market. I rather focus on the bottoms to see how the growth is picking up, because the bottoms are far closer to the 'actual' market rate than peaks will ever be, especially when it comes to last year's peak. That peak almost literally screamed SELL SELL SELL!!! And I did.
