lately I have been missing breastfeeding my son is almost 7 and I breastfed him for almost 2 years... me and my wife are…

lately I have been missing breastfeeding my son is almost 7 and I breastfed him for almost 2 years... me and my wife are trying for baby #2 but I strongly want to get my supply back so I can donate or wet nurse for other mothers who cannot do it... I don't think it would be difficult because my body started producing milk on its own last year again...