For me, investing all your savings to 3 cryptocurrencies you have mentioned is not really good idea. Why? because you cannot say what will happen the following days or months if the prices will either go up or down. It is very risky and the rates are flactuating. Also, what if something emergency that might happen in few days or months with your own personal life. Be proactive about uncertainties.
Yes it was a not good idea, why you should place all your savings in cryptocurrency while investing in only one kind of crypto is already better. Its really or very risky to put all your savings in crypto because of its fluctuating state of exchange currency. You could not tell that your return of investment will be enough to what you've been invested. If I were you, I would think many times if my decision would be good or profitable soon.
I think you should properly manage your savings as it is risky to put all your savings in market. It may be a good idea to invest 40% to 50% of your savings initially. It is very important to monitor the market before investment. Successful traders do proper home work before investment in order to avoid any loss. If you are getting profit as per your thinking then you may think about the remaining amount.