Even though Barcelona's performance has been a bit down, I think they will be able to secure the La Liga title. Because Real Madrid is far behind. At the same time, the main goal of Madrid is the Champions League. And so I wouldn't be surprised if Madrid dropped points in a few more matches. Barcelona, on the other hand, is now completely pressure-free. Since they are 13 points ahead of Madrid, Barcelona won't face any major problems even if they lose 2/3 matches. Barcelona will win the title this time.
You can't even judge the performance of barcelona. Getting drawn is not always a bad thing. Real madrid was losing points while barcelona still able to get 1 point. That means barcelona is in more advantage compared with real madrid. There was no change in the standing and nothing to be worry if you are a barcelona fan. barcelona was just making its chance to win la liga become even bigger since real madrid needs at least five matche sto surpass barcelona.
It's impossible for madrid to catch barcelona this time. Barcelona looks so strong in the domestic league compared yet real madrid has chances to get two trophies this year.