First sort and declutter donate and throw anything you dont love or is used frequently
Then start to group items by the room you want them to end up in at the new house and pack them together. Label the box with the room name and contents. If you have multiple bedrooms at the new house, think of a naming scheme for them color based on walls or a number or something)
Pack heavy things into small boxes so you can actually lift them. Big boxes are only for pillows and lamps
Fragile stuff boxes can be tagged with bright colored duct tape (I use neon pink) and group all together so the movers cant miss them
As you pack boxes, put them all in the corner of 1 room to start with (or the garage) so that every room isnt upended. You will probably pack your kitchen in stages as you will need some stuff until the last minute, but you can pack most mugs, glasses and plates etc a few days before.
Make a kit of stuff to take in your car on move day with bedding for each bed, loo rolls, bin bags, tape and scissors, a change of clothes and jammies for everyone and a towel and toiletries. Possibly also the kettle/mugs and some paper plates and cutlery That way you arent hunting for the essentials on the first night
On move in day, set up and make the beds first, then the wifi, then the kitchen, then the bathroom