You can ask whether someone wants advice without making the offer sound like impatience.

The question can be asked in two very different tones. Wanting to know whether help is welcome is an act of respect. Asking in a way that suggests the talking has gone on long enough is a request for the conversation to end, and people hear that difference instantly. The same words carry either meaning depending on what sits behind them.

Ask early and warmly, before you are tired of listening. Wondering aloud whether they want thoughts or just a hearing works well, and then genuinely accept whichever answer comes back.