This period do not encourage trading or investment but at the same time when price is down is good opportunity to buy cheap and when its explode you will gain it. Nothing is lost in bitcoin, those holding for long now are the great benefactors but if you buy this period is more safer.
If I have money now, I would buy half of bitcoin because in next three months it will double the current price. This is real because it always occur this way after 5 years remember in 2011 and 2017 from the market charts and caps. And this year will break more even.
I don't think that anybody that's really interested in Bitcoin and has taken the time to look at the market as you have mentioned shouldn't be advised on what to do as to have invested in Bitcoin when it went down to almost $15k and I do think Investment should actually be the word since you intend to hodl for a long term.