Didn't you just post a thread asking basically the same question?
For what it's worth, I studied Science/Law for a couple of semesters, majoring in biochemistry. I eventually switched to Economics/Law because Science/Law took too much time.
It wasn't too difficult for the first semester, while I was taking first-year science subjects (in combination with second-year law; I switched part-way through). Contact hours were long, but the work itself was fairly easy. And for that semester, I was also working 10-15 hours per week.
When I got into second-year science combined with third-year law, though, the workload became too high. The contact hours were even longer, and the work became much more difficult. To maintain my grades, I had to drop work and I skipped some lectures fairly frequently. I also had to drop a few extracurricular activities.
Now, to be fair, I probably did a lot more work than I needed to. I had also intended my science studies to be secondary to my law studies, given that I had always intended to practice law, but I ended up spending more time on science work than I did on law work. And ultimately, I came to the conclusion that as much as I enjoyed my science studies, they simply weren't going to be particularly helpful in legal practice. Sure, you might have a bit of a head-start in some IP fields, but it doesn't seem to be anything very significant. Certainly the actual content of your science course, which is likely to be very technical, would only prove useful in the most superficial way.
Of course, if you're considering studying medicine or entering a science-related field, then you might think differently. But if that's the case, I would question why you would study law to begin with. Law school is mainly useful as a trade school: if you don't intend to practice, much of it is a waste. You might be more attractive to some employers with a law degree, but my view is that you'd be better off dedicating more time to performing better in a more relevant field. Others might have a different opinion.