Nope, I ran into that same issue.
”Scheduled” 135 is what the reg says.
So you’re back at zero as far as the 121 world is concerned with a minimum of 1000hrs for upgrade so bite the bullet and get 121 time with Republic.
With all due respect, don’t thing they’re waiting for you as they’re most definitely not.
Your problem with Part 91 is also their problem with Part 91.
Your chances would have been better if you’d stayed 135 and didn’t switch over to 91.