Pregnant with baby #2 and potty training??

Started potty training my April baby in December. We did the oh crap method and she picked it up pretty fast. The first two days are the hardest.

My April baby (technically may 4th baby 😂) potty trained the beginning of December. So right when he turned 19mo. It was super easy and he basically did it himself. My oldest potty trained right at 20mo, also very easily. I’m due with #3 in June but I’m not super worried about regression as he is completely trained and it’s still 5 months away. I would train whether he regressed or not; just be consistent through the regression and don’t make a big deal out of it.

Following... I'd love to have my boy trained before baby comes. He's so interested but i'm not sure where to start or if it's too soon.