First time hearing about sshuttle, thanks! What I did some time ago is to order small VPS in Linode, hosted wireguard server and let my router connect to it. Since connection is established - I’ve port-forwarded all ports (except 22) from VPS to my router via established wireguard connection.
Then all I have to do is to manage port forwarding on my router, but if I want to connect to my router from outside - I must use VPS IP.
Worked great, except the fact that I used to have mobile internet and as a rule of thumb - upload speed of mobile internet suck ass…