You could wait for the trend to go bullish before investing. But we simply do not know when (or if) it will happen.
If it happens, it usually goes skyhigh in a short time.
Bitcoin is high risk / high gain !!!
Only enter Bitcoin if you feel good about it and if you're prepared to wait >1 year for results.
1 year is smalltime. 5 years is a solid time to way. 10 years ideal for big gains. This is a long term boat. We need to apply Warren's teaching, except this time Warren isn't in this boat because simply he is too old to understand.