Absolutely sympathise with your situation atm. I recall the days in 1996 at the separation from my first wife and I had to dig really deep to get through that and work 12 hour shift work. I decided also to build a kit home. Although exhausting it gave me direction, a purpose and a goal. My ultimate dream was to enjoy my first night with my young daughters in our new place.
With the pandemic it does compound issues. The only comfort I can give you is to also dig deep and remind yourself regularly to pat yourself on the back. One day you'll look back and be proud of this transition period.
Use your phone a lot, Skype might help more. Keep busy. Thanks for posting, others will be in a similar situation and will benefit from it.