IP445 (or larger) Center Cockpit companionway help for larger dog

My husband and I are thinking about upgrading to an IP 445 center cockpit. One concern is the tall companionway - we think it might be too steep and tall for our 50-pound dog to easily get up/down, even with our help. Does anyone have any ideas or experience with this? We are open to using a ramp but most ramps are for getting from the dinghy/water to the boat, which is not an issue on the IP445. He is an extremely agile dog so we could easily teach him to use a ramp if it worked and wasn't too bulky for storage. The companionway entrance is taller than us - probably 6' from the sole of the cabin to the cockpit.

We currently live aboard our IP350 - so this is a multiple day occurrence going up/down the companionway. Our dog is not allowed up/down the companionway on his own - we help him both up and down. But it is easy in the 350.

Getting rid of the dog is NOT an option!

If anyone has any experience with this, we would appreciate your thoughts!