unless you want a whole new plan due to overall volume/availability changes, or re-organize a particular week, at the moment I would use the chat. We’ll also have something to bring you back to compliance if you’re not really following the plan similar to the “Based on my plan progress, modify the upcoming 7 days of workouts” proposed prompt in the chat soon.
Also you got me going on the chat speed 
I’ll launch a new version tomorrow with an ‘Extended Thinking’ option (similar to Claude or ChatGPT) that will be slower but uses more thinking token and a default version without it that should be much faster. Also includes some other speed optimizations.