Any tips for relactation?

I want to start breastfeeding my 6 week old again. I'm going to do combination feeding as the reason I had to stop was because the constant friction made my skin condition unbearable and I lost all of the skin on both my nipples! So with combination feeding I will be able to give my skin a rest aswell! It's been 5 weeks since I breastfed last and as far as I'm aware I'm no longer producing milk. How can I get it back?