Too loose when strings are Dropped?

[Zachry23]

Recently i have been trying to learn some new songs that are Dropped to Bb on the E-string. This makes my string very..very loose! Almost to the point of unplayable.

What can bassist do in this situation?

I play a 4 String Bass.

[Qvist]

You need thicker n' bigger strings man!

[Thunder Pulse]

There are like 5 different threads currently discussing this - in the Strings forum, not Technique.