[Help]Merge 2 separate Hestia servers

I have 2 separate servers of Hestia. Both same debian version, and both updated with hcp. Due to increase in server charges (almost 25%), I can no longer afford it. Hence, I wish to merge the 2 servers. I know the backup & restore functionality which I use regularly. However, this time is a bit different as both servers are production ones, and I run my email servers as well on both of these. Morever, I also run gits (forgejo) on both of these. I am at a place where I have 1-2 weeks left to hand over the server else will have to pay for a whole year.

I am stuck as my forgejo one is a major ask, as well as my main server is almost 50GB worth of emails itself.

I do not wish to lose and have issues when merging. Any suggestion on the best approach here?

Can anyone help here?