Russian and Belarusian citizens who reside in Lithuania will have their residence permits revoked if they travel to Russia or Belarus more than once within a three month period, Lithuanian media outlet LRT reported on May 3.
Archived version: https://archive.is/newest/https://kyivindependent.com/lithuania-to-strip-residence-permits-of-russian-belarusian-citizens-who-frequently-travel-back-home/
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As of May 3, citizens back to Russia and Belarus must have documented a valid reason for additional trips within the three month timeframe. Exceptions also apply for employees engaged in international freight and passenger transport.