Dealing with Loss of Force Touch in watchOS 7

I'm an Objective C relic (don't do Swift) with an iPhone app with a Watch app that I haven't had to touch for 2 years (because it just works) and has worked with WatchOSs 1-6 but now is broken because I used one Force Touch menu item in three paged views each with three pickers (just a spinner on opening).

Basically, the app is a calculator using dates and the menu item simply lets the Watch user set the date to Today with one tap instead of fiddling with three pickers.

I've watched the 2020 WWDC video "What's New in watchOS Design". It looks like the best fit would be a toolbar button on top but that is only available in OS 7. Many users can't have OS 7 on a 1st Gen Watch. I thought I could create a home-brew replica but found there is not a scroll view in watchOS before 7 to even place a button. The next best thing would be something like a More button but I can't figure out how to add/overlay a button (leading to a modal) in a lower corner (no constraints or auto layout in watchOS) without running into trouble with curved screens and different sized faces.

So, I would be interested in any suggestions and help on how to resolve this for all watchOSs, or I guess I'll just remove this helpful functionality (which many probably do not even know is there because it's hidden).
Dealing with Loss of Force Touch in watchOS 7
 
 
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