My suggestion is to accumulate your Bitcoin purchases regularly in the long term. It seems you are thinking about short-term profits, which I don't think will be very significant.
I don't know how you'll respond when the market price drops and surprises you. The value of your investment will decline, and will you panic? Don't follow what others say when deciding to buy Bitcoin. Enrich your knowledge first, and you will know the steps you need to take according to your plan.