Unlikely. That's also the official position of our MoD.

That being said Lithuania is still in a very vulnerable position being sandwiched between Russia and Belarus. There are also some doubts if NATO reinforcements could arrive in time and as we've seen from Bucha, Russians don't need a lot of time to wreak havoc on civilian population and infrastructure. As unlikely as it may be that Lithuania gets invaded, preparing for it to the best of our abilities is absolutely the right thing to do.