I would advise you to wait till Spring at least. Wait and watch. You will hardly miss the opportunity to earn here when the next rally begins. But might be very disappointed if you enter now and see for example BTC going down to 1000 USD. I don't think we will see such figures but they are possible and it's better to wait a little bit more now)
I don't think BTC will go down to 1000 USD, it will probably swing around 3.5k USD for quite some time.
For anyone who are interested in investing in BTC or crypto it might be a good time right now. And if you still fear that it might go much lower, it could be a good compromise to split your investment into smaller portions and invest over a longer period of time.