Hi David,
It's great that you track your historical spending, but I would also recommend doing a 'retirement budget'. When you no longer work, your expenses DO change. Obviously work expenses go, but you'll also typically have less car usage, less need for tolls, fuel, etc. I'm guessing from some of the values in your spreadsheet that you've got two cars? Critique whether you think you can live with 1 only in retirement. The odd Uber or taxi here and there on the odd occasion when you need a second car may be far, far cheaper than insurance, rego, petrol, maintenance etc on the second car. It may save you thousands a year.
You've spent $68k in 6 months, so even getting expenses down to $90k a year is going to be challenging (and, being direct, I wouldn't feel comfortable retiring on $90k a year with only $1.2m, notwithstanding more that might be able to flow in later). I'd recommend trying to live at that level of spending for at least 6 months prior to retiring, just to be comfortable knowing you can do it. If you can't, then you possibly need to ask yourself some difficult questions.
There's a few things that stand out as expensive to me and you may be able to get something equally satisfying for less money. (Also, I'm guessing from some of the labels on your spending table, that you live near me - eg RACQ, Steve Jones - so I have some idea of the costs in this area)
Mobile/Internet. We spend about $175 a month on internet (100MB NBN plan) and four mobiles for the family. We probably have some room to cut in our budget here as well. If you can get away with a pre-paid plan, Catch and/or Kogan are both reasonably priced for mobiles. In comparison, you're spending $250+ a month and I'm guessing that includes 2 mobiles only?
Squarespace - will this stay, post retirement?
Discretionary lifestyle expenses. Alcohol, gym, beauty, entertainment, eating out and streaming all add to a very substantial amount. This may be the lifestyle that you want, but it may not be sustainable in retirement. Some suggestions - Grays Online for wine and occasionally spirits (not always super cheap, but when you get a bargain, it can be a great one). Or taking up home brewing, if beer is your thing. Home gym as opposed to gym membership (or buy a bike or good trail shoes as there's great trails in the area). Cycle through subscription services and binge the one platform for a period rather than having multiple at once. Be strict about a budget for eating out and entertainment and keep to it month to month.
Holidays. Not sure what you are getting for your Trip A Deal, but you might find you are better off trying to build a holiday yourself. I'm in the process of organising a month in US and Europe for our family of four over Christmas (so expensive time to travel) and our total budget is going to come in at around the same as your Trip A Deal. When you're not constrained by work time, you can put in a bit of effort to organising holidays and it can bring costs down significantly.
Also, I'd suggest you should genuinely think about whether you'll be able to cut expenses as you get older. You are already spending a very significant amount on medical. Don't underestimate how this may grow in your twilight years.
Good luck with this. Feel free to checkin here as we are all a friendly bunch and we help keep each other on track.