I use a suitable extension tube to get round such problems with my bellows. The only bellows I have with movements are for my 5x4 camera. One-day I'll get lens boards made up to use them with my DSLR/MFT cameras, or so I keep telling myself...Sure! I have a simple one that only allows 8 degrees of tilt, which is a useful amount. But the adapter itself is kinda clunky, with a lot of play. On the other hand, it was only ~$25.
Desiring more tilt, I then sprung for a very expensive Kipon tilt-shift (12 degrees of tilt, +/- 10mm shift), based on Adorama's affirmative answer to a question about it working on OM-D bodies. When I got it, I found the OM-D's protruding EVF would not allow it to mount. I briefly considered attacking it with a belt sander before sending it back.
Here is my tilt-shift "adapter:"
View attachment 701350