My principal doubt is, if Girona after this international break is gonna still being this good, or they are gonna start to fall behind, maybe they can last until the winter break, and become the winter champions

i remember the alst team becoming winter champion asides of the big threes was Real Sociedad a lot of time ago.
Valencia has also been champion of the Spanish League and that's been a long time, Girona continues to amaze people, the majority of Spanish League fans today don't think that big teams like Madrid, Barcelona and Atletico Madrid are still unable to catch up with Girona, after the international break Girona will face Bilbao, Bilbao will definitely try to threaten Girona's position.
Girona is doing everything they can to win the season title, but I don't think Real Madrid and Barcelona will let that happen. I know that many of Real Madrid's talented players are injured, but I don't think that will stop Real Madrid from performing well. Real Madrid will continue to perform well because players like Toni Kroos and Luka Modric are still around. Despite their advanced age, these two players are still better than some of the world's young players. Jude Bellingham will play in every game that real Madrid plays because he is healthy again. Additionally, real Madrid has players like Rodrigo, Joselu, and Brahim Diaz who will play attacking positions.
In all honesty, these international matches are allowing a team to lose players. Girona will want to take advantage of real Madrid and Barcelona losing some of their players to win the league title, but I don't think that will happen because they will soon face a team that will defeat them. Not only will Barcelona face player problems, but real Madrid will as well. I heard that Gavi sustained a serious injury in yesterday's match.