just wait till it drops more and once you found out that bitcoin is going bubble again you can invest early ASAP and then buy bitcoin as much as you can in that case you can make a good profit on it. trading works that way so definitely all traders starting to gather and planning when to buy bitcoin and that demand will gonna cause bitcoin price to rise again.
For you to have time to wait until the price of bitcoin to dump for you to buy more bitcoin , it could be better if you search first for ways for you to earn bitcoin in times to deal with the time you will wait. If you want to earn bitcoin the best possible way is buy going campagin here in the forum where you could actually earn bitcoin by supporting campaign where you will just need to post and share your thoughts about things that is related to bitcoin and to the project of the campagin. It is easy and reliable good for you to take your time and efforts.