Brian Austin Green and Sharna Burgess have admitted wedding planning is “the last thing on our mind”. The 51-year-old actor and the 39-year-old dancer – who welcomed their first child together, Zane Walker, in June 2022 – got engaged last September, but they haven’t found the time to start organising their nuptials due to their hectic family life. As well as Zane, Brian has sons Noah Shannon, 12, Bodhi Ransom, 10, and Journey River, eight, with actress Megan Fox, and Kassius Lijah, 22, with ex-girlfriend Vanessa Marcil. Speaking to Us Weekly about wedding planning, Sharna said: “We’ve been ask…