Barcelona have dropped points in their last two La Liga matches. Barcelona have lost against Real Sociedad. Barcelona have also failed to win against Celta Vigo. So if Barcelona want to retain the top spot in the table now, they will have to win their upcoming matches. If Barcelona lose any points in any match, Barcelona will probably lose the top spot in the table.
In the next few matches, Barcelona will play against Las Palmas, Mallorca, Real Betis and Leganes, all three teams are relatively weak. If Barcelona's performance is stable, Barcelona has the ability to earn full points in every match.
If we forget Valencia skip game for Real Madrid and Barcelona fail to win their next match, if Real Madrid should win their own, they will be 1 point away from Real Madrid, that means there is going to be war in the upcoming matches. I don't care about the situation of Real Madrid, those guys are very good in surprises they can bounce back to their performance and you will see them sitting on top of the table miraculously just like how they used to do it in the past.
Rodrigo seems to be coming back soon, I'm not sure his X post was a tease but he seems to be giving sign of coming back from injury. If he comes back and some bench players are put in good use, Real Madrid can still form a ballistic squad to win any match they have pending till when other people will come back from their injuries. At least Courtois is back, he will save them the stress and embarrassment Lunin has made since his absence.