Russia may invade the Baltic nations, but not anytime soon. There is simply no plausible scenario in which this could happen in the next 24 months. Russia simply lacks the capability to do anything other than continue to grind on in Ukraine and wait for the creature Trump to waddle back into the White House in January 2025, after which he will promptly hand Ukraine to Putin. Although Europe is attempting to prepare for Trump pulling the USA out of NATO, Western "leaders" are unable to act decisively. The Baltic nations and Poland have zero confidence in Article 5 (the UK and the USA, after all, conveniently overlooked their legally binding obligation undertaken 1994 to ensure Ukraine's territorial integrity) and so Poland is moving as quickly as it can to become Europe's dominant military force, while the Baltic states are training their citizens in the arts of sabotage and disruption.
Once Trump has pulled the USA out of NATO, the Europeans will embark on various appeasement attempts, along with various individual efforts to cozy up to the Putin regime. Austria will follow Orban's Hungary and become an overt supporter, while Italy is likely to be a semi-overt one. European voters will opt for appeasement in the belief that it will free up funds for education and medical services, and so no meaningful enhancement of Europe's presently pathetically inadequate capability will occur.
Only after these things happen will Russia be in a suitable position to reconquer the Baltic nations.