As long as your airlock is bubbling at least once a minute I think the headspace is not a problem. You have plenty of CO2 keeping Oxygen infiltration from happening. IF you top up and the ferment decides to get active even for an hour you could wind up with a foam fountain so as long as it's bubbling let it be.
Biggest issue now is taking an SG reading. Drawing out a sample is going to be a bit messy and cleaning a wine thief of that sediment is not a lot of fun.
Just a future note, Disregard ANY recipe timelines about fermentation duration. EVERY batch is different even if you make two batches from one bucket of juice or juice concentrate, the smallest details can change the rate of ferment. That's probably one of first and most common mistakes when starting out, so you just chalk that up to lessons learned.
Normally when I rack my fruit wines are a lot less loaded with lees but as long as things start settling AFTER fermentation is finished there's no problem, you just get to have more fun cleaning carboys. Once the bubbling slows to less than one 'burp' a minute I bet you will see clearing happening pretty quickly.
Hardest thing for me to learn with this hobby is the "P" word.* That's why it's in my signature line. Patience will put you miles ahead and save a lot of work So hang in there, You've made wine now the waiting game starts.
* Patience