How to get Bernadoodle to stop being extra needy

In the last two months our 3 yo female Bernadoodle has gotten incredibly needy. She is constantly looking for pets when I’m standing, sitting, walking around. All the time. She comes up and will boop our hands with her nose for pets or if we’re on the couch she jumps up and just hovers over us until we pet her. I’m constantly saying “No” or “Off” and “Go to bed” which she’ll listen to for about 3 minutes then come back at it.

We had our first child a couple years ago and she was and is fantastic with him. We’re so lucky she really is a great dog. We love her so much but I am 8 months pregnant with our second and my patience is wearing thin.

She’s walked fairly regularly and I’ve purchased more stimulation toys. Any other advice would be appreciated.