I've been working from home for years now and I love it.
Warning: The first week will the be hardest on you. After you get through some first week frustrations, you will start to feel a bit segregated, keep plugging on and you will start to enjoy your work a lot more and not want to go back to the office -i.e. working in an office is pointless these days.
Long term support (LTS):
1. VPN Sucks. It's slow but works okay and is about 85% reliable.
a. If the company is dead set on VPN you need a good firewall that supports a good enough IPSec/OpenVPN throughput (you set up a good handshake with your home network and your work network and your speeds will increase a bit).
b. Most companies have horrible VPN speeds/implementations and most times AutoCAD is super slow. Get unnecessary things off VPN bandwidth; either CAD or Gen Office gets off VPN to lighten the load on the other. But, even a good IPSec setup you will not improve this much; it is mostly AutoCAD not VPN.
2. Get good/better with BlueBeam or Adobe. Develop standards and procedures.
3. The cloud (bim360, etc.) works good. You are more subject to slowdowns but overall the connection is about 85% reliable.
4. There are other solutions (Peer to Peer stuff) that works great. If anyone ever gets to that point, I can help you with some of those bottlenecks.
Short Term Support:
1. Suck it up, and learn from the experience. It is fun and it will teach you to be more organized.
NOTES:
The current company I work for is serverless; meaning we don't have a company server and I don't have to VPN into anything anymore. Yay!