If you keep trying to time the market, you will never buy Bitcoin
When the price is going up, you'll feel like you missed out
When the price is going down, you'll feel like it's going to 0
Just buy you what you can, continue buying over time, and live your life
Time in the market > timing the market
Buy whatever you can and expect to be wrong for 4 years
After 4 years, I think you'll be pretty happy