Any tips for growing out a hair style please?

[Pointlessfan]

I have a jaw length graduated bob which I had cut in when pregnant. At the time my hair was shiny and manageable.
DD is now 13 months and since I stopped breastfeeding about 6 weeks ago my skin has been awful and my hair has gone mad! Assume it's hormonal.
I also think the bob is a bit ageing so I want to grow it out. Had it trimmed today and hairdresser's plan is a trim every 6-8 weeks to try and get rid of the graduated part.
How can I deal with it in the meantime and try to get the shine back? Any tips please?