How can I farm more event points and fast on umamusume?

For context,im trying to save up as many carats and rainbow crystal shards so i can have enough for when el condor pasa speed cards come out,but ever since school started I haven't had the time at all to play so I've been doing auto-careers,however it does not gather up nearly as many points as a normal career would.To make matters worse,this new scenario is teribile and requires liads of time and resources which i do not have.