How long to sit out with bruised ribs

Two weeks ago, a black belt accidentally fucked up my ribs when he fell on me going for uchi mata in randori.

I have been training uchikomis but ne waza is def. out for now. Anyway, I was working on some turn-overs with a partner but it just seems to piss off the ribs. Same with ne waza.

I don't want to take time off but it seems I'll have to. How long do you suggest from your experience? Also, how long should I ease back in for?

Thanks.