We went to mediation, and before and after agreeing a deal I conferred with my lawyers to see what I should offer and if what we’d agreed was a reasonable deal. My advice, depending of course on how much is at stake, is to get the best lawyer you can. I went to a senior partner at the top family law firm in the region, not cheap but well worth knowing you’re not being shafted.
Also stay in charge of your bill with the lawyers. I started out by saying that I was only going to pay them for what I directly asked them to do, ie: their time for meetings and phone calls. They still sent me a bill with loads of random charges for the time of people I never met or spoke to, stuff like “Review of Case File”. I refused to pay and they backed down sharpish.
Good Luck.