live in a small way

live in a small way (on a small scale, modestly) — жить скромно, без претензий

Example 1: Although they are quite well off, they live in a small way in a cottage in the country. — Хотя они люди вполне обеспеченные, живут они весьма скромно в небольшом коттедже.

see also
[cut your coat according to your cloth]
[stretch your legs according to your coverlet]

Сf [как сыр в масле]