The current Bitcoin Dominance Index (BTC.D) is at a high level, with the potential to break further to reach the 67% - 68% zones, and even possibly up to 70%. However, in the next year of downtrend (my view is a downtrend from now until at least another year), this BTC.D index could entirely reach the 75.xx% mark to completely fill the gap from 2017.
However, you also need to be aware that BTC.D reaching resistance zones does not necessarily mean that it will then drop down and form an altcoin season. In my opinion, BTC.D could very well move sideways at the 60% - 70% level throughout the next year rather than dropping sharply.
This season, in my view, ended in November - December 2024. If possible, try to save money and start buying coins in the next season, as early as the end of 2026. The upcoming 2027 season will be much more explosive compared to this year’s season.