Is it possible to bitcoin core from a selected date range like from 2018 and up to? It is downloading from a starting point of transaction.
No. That would completely break the "trustless" nature of Bitcoin and the blockchain.
The entire concept of the blockchain is that it is an unbreakable chain that can (and should) be verified from the very first block to the very last. If you skip the beginning, you have no way of verifying if the data you are currently getting is correct.
If you are not able to run Bitcoin Core due to time/space constraints, you might be better off exporting your private keys out of Armory and using them in a "light" wallet like Electrum.