Yes, but this is exceptional.
The principle is indeed that of the uninterrupted execution of custodial sentences.
However, in certain exceptional circumstances, the sentence may be interrupted.
According to Art. 92 CP, it must be for serious reasons, which is why the practice of interrupting a custodial sentence is very restrictive.
For example, a birth, a serious illness that prevents the convicted person from serving the sentence, the death of a relative or the settlement of urgent matters of a vital nature.
In the Canton of Vaud, the authority competent to pronounce a suspension of sentence is the Office for the Execution of Sentences