Advice I'd give you is to focus on positional control, from closed guard, side control, back and mount. Once you're able to hold position, work in a submission technique here and there. Over time these will become easier for you recognize and you'll be able to drop a submission quickly from the position, or hold position and weather the storm if you face a squirmy foe.
Drilling is important: break an hour and a half training session into 15 minute warm up, 45 mins drilling techniques and about 30 mins of 5 min rounds(start slowly and work into the rough stuff to avoid injury).
You can easily tweek the times to fit your needs. Sometimes you'll have 60 mins of 5 min rounds. It's all adjustable.