Belly bands for the male might work.
Just be really careful and make sure you learn about all the things you would need to do. A few years back, a dear friend of mine bred her pomeranian girl. I don't think she was very prepared for the complications and lost her little girl and the puppies.
I dont have any experience breeding. (Dont think I have the guts to take it on) But there are many people on here who can give you very good advice.