[ESA] is it possible for a +1 or +0.5 in esa reval

Title. Can I get expect a grade change if I just need +1 or +0.5 in esa reval? I have noted some places where I should get marks in all 3 subjects and I need literally+1 in all 3 to get a grade change. So if suppose grade doesn't change so should I approach RR COE?