From the pictures you provided, I believe you have a subtle dislocation of your caudal septum to the left. This is similar to a sliding door being off its track, which can adversely affect the tip cartilages. I recommend you seek consultation with a rhinoplasty surgeon!
It can take longer than 6 months for your nose to fully evolve and heal. This includes the issue you have noted in terms of your nose being more oily. I tell patients it can take upwards of a full year after rhinoplasty before the nose completely heals.
Thank you for your question and sending photos.
It is always best to evaluate a nose in person. One of your pictures looks as if you may have a bit of a "hanging columella" but the other one seems OK. A hanging columella could be related to either the leading edge of the...