Past records shouldn't be what we are using as facts, but it is there to give us an insight of what might likely happen and not a gaurantee. This is why you don't need to bother about which month does bitcoin price go up or down when we are trying to grow our bitcoin portfolio, when you are not planning to sell your coins, because if you keep looking at what month it will be, you might be tempted to sell some and take little profit, if history says that the next month the price of bitcoin will go down. This will completely kill your plans toward your bitcoin base on wrong decisions made at the wrong time. If you are planning not to sell, then the price movement should bother you but to make you strong on hodli.
Your strategy to emphasize on buy and hold for long term when it comes to Bitcoin and ignore short term noise is generally considered a sound and effective approach. However, it is also important to remain patient and refrain from monitoring daily market prices and charts. Continuously observing these fluctuations can lead to emotional stress and may tempt us to make impulsive decision that deviate from long term financial goals.