Asking to go part time - risky?

[Undirection]

I'm Head of Marketing in an SME. Or that's my job title anyway. I'm effectively a sales promotion supervisor because the Sales Director likes 'doing' marketing and has completely messed up strategy and lead gen. Last night he asked me for a small business plan to justify a £130 piece of AI software. I'm fed up here and the future looks like more of the same.

So, one option is to 'help' the business by reducing marketing overhead and going part time as I'm just not busy and am frankly bored.

However, when asking for this, am I essentially saying 'I'm leaving very slowly' and if they say 'No' am I highlighting I don't want to be here?

[Previous]

Just check out slowly whilst you look for a new job that you're interested in? (That's interested in you too).

[StevieBee]

You're either in or out.

Reducing the amount of days just means you have a few days less of feeling despondent. But you won't because the days you're not working you will be thinking about the days you do. So all you're doing is cutting your wages for no gain.

If you can see no change on the horizon, start to look for something else as nothing will change regardless of you working two days or five.