I don't think any particular month gonna affect the bitcoin price but yeah the end and early months of the year have same pattern in past. In trading past might not be repeated in future so price can even remain at current bear market at the end of this year.
While it is human nature to see patterns out of nothing, the patterns that traders see can essentially be a self-fulfilling prophecy. If all of the traders see the same pattern and agree on it, then all of the traders will react accordingly. Therefore the pattern becomes true due to the traders reacting to the pattern they thought they saw. An example would be traders looking at the chart and it being similar to 2014. Other traders agree so they decide to enter the market to buy and Hodl. This causes the price to increase and other traders FOMO in because the pattern is turning out to be repeating. Its a self-fulfilling prophecy.
Increased regulation over crypto and panic among new investors in main reason behind the current dump on market.
This is what is going to cause the price to dip in the short term. However, increased regulation for the crypto market paints a bullish future. Institutional investors will be more keen on diversifying into Bitcoin if they have regulatory clarity. Let the weak hands sell, Long-term is the game here.