we can't really predict the ups and downs of bitcoin especially because it is very volatile all the time. if the price will stabilize to uper 8,000usd / bitcoin
maybe the rise will continue and If it will go down again to 6k usd-ish it will go down and maybe that is the time you want to buy.
best time to buy altcoin is 3 weeks later when bitcoin was struggling to climb maybe this time is not ideal to buy altcoins just wait and hodl if you have