it seems they have designed carve-outs for this purpose, although ymmv

Exceptions to the rule include:

• Russian embassy employees and their family members working in Estonia;
• Employees directly involved in the transportation of goods and passengers;
• Those who have the right to freedom of movement under EU law;
• People visiting close relatives;
• People entering for humanitarian reasons.

personally i don’t see why you need to pass a law like this but, i suppose i’m not estonian