You can continue your investments gradually rather than being aggressive in investing and focus more on keeping your funds moving. Remember, the stronger your funds, the stronger your investment base. I think of emergency funds as the cornerstone of investing. Consider reserve funds and other necessary funds as emergency funds and investment aids. For example, if you run out of your emergency fund and you need more money, you can take help from the reserve fund. On the other hand, if you want to buy additional bitcoins during a bearish market, you will have the opportunity to buy more bitcoins with the help of reserve funds.
I still feel that the concept you are doing is not right my friend, because after all why do you force investment by taking your emergency fund first when you still have a reserve fund to use.
You have to realize what the function of the emergency fund is for and I don't think you can use it to invest especially there are still other funds where your reserve funds are still stored because after all the concept of having an emergency fund is to fulfill financial aspects when we face unexpected situations.
If you use your emergency fund to invest in bitcoin and you have an unexpected situation that requires you to spend not too little, it will make you confused and make your financial condition not too good so you have to think again if you use your emergency fund first to buy bitcoin especially you still have spare funds that you can use.