sit tight
US /sɪt taɪt/
UK /sɪt taɪt/

1.
esperar pacientemente, quedarse quieto
to wait patiently and do nothing until you hear further information or instructions
:
•
Just sit tight and I'll be right back with the results.
Solo espera pacientemente y volveré enseguida con los resultados.
•
We'll have to sit tight until the storm passes.
Tendremos que esperar pacientemente hasta que pase la tormenta.