You're welcome!  Using a tablet, or sheet music, or notes can be a good reminder to fall back on, or to cue your memory, but it really has to be memorized.

The biggest problem I have when playing in a 3 piece is that I'm usually the vocalist.  And I rarely lose my place in the song, but sometimes can't remember all the lyrics!   So, sometimes I just repeat a verse.  Whichever one I can remember at the time!  Or just make up some lyrics on the fly.  😄