from time to time

adverb

Occasionally; sometimes; once in a while.
“I'll find out your man, / And he shall signify from time to time / Every good hap to you that chances here.”
“On these red embers Hatteraick from time to time threw a handful of twigs.”
In whatever status exists at various times.
“This is another way of saying that the terms of the individual contracts are in part to be found in the agreed collective agreements as they exist from time to time […]”
Continuously from one time to another; at all times, constantly.
“So was she trayned vp from time to time, / In all chast vertue, and true bounti-hed / Till to her dew perfection she was ripened.”