Oh, my lovely, I have been in your exact shoes.
Insanely itchy, midwife phoned as soon as my blood test result was in, to say I needed to be induced that day.
I ended up with the pessary, and then the drip. It was a long labour, but having an epidural meant I was able to get some sleep. No, it wasn't what I'd hoped for, but DD was born naturally and I had no birth injuries.
With DS, my waters went at 26 weeks, so he was also induced, once the risk of infection was too high. Had to go straight onto the drip, as soon as I had an epidural, I dilated 1-10cm in an hour! Much faster labour, but again, born without extra assistance and no injuries to myself.
It's a change of plan, but you've got a little time to get your head around it. If something went amiss during a normal water birth, you'd have to just deal with what was happening at the time.
Ultimately, your baby is unlikely to be aware of the difference between a water birth and an induced birth, so is there anything you can do to make your surroundings more relaxing, during your induction? Once I was in the labour room, I had a scented (electric) oil diffuser and candle, and a set of mini Bluetooth speakers, playing relaxing music. I also had my own pillow.
I also second what a PP has said, about contacting your midwife to discuss how low you are feeling.
Good luck.