I think the effect of the pandemic situation is already saturated and will not see more impact on crypto market due to it. From my point of view buying BTC at the moment can be done but need to wait a little longer to get good returns.
Maybe you can invest 50% now and if it goes down more, you can invest the rest of the funds to buy BTC.
I think buying bitcoin is not the right time now because the price of bitcoin has started to go up to almost $ 10k, maybe you can buy some altcoins that are down and don't forget to choose altcoins that have the potential to go up
Agree buying on the growth movement is not that wise. Can't be sure where the price will stop before dump/correlation/etc. Better just hodl for now and watch the market.