It's a real job and you sound like you have proof it is a bona fide (good faith) marriage. You do not have to be with your wife "all the time." People need to work and so going to your job is normal. Just keep records of your good faith marriage like joint bills, pictures and other items. Talk to an attorney if you have any concerns that you do not have a bona fide (good faith) marriage. Don't forget that you will have to remove conditions on your permanent resident status by applying before the end of the 2 years.
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Your friend, the lawyer, seems to have been reading too many horror novels or is way too carried away by conspiracy theories. If your marriage is bona fide. You should not worry about those things. Life is hard and ordinary people tend to work to support their families.
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If you live together but you have to be away from home on certain times due to work, that is okay. If immigration checks, just tell the truth because there's nothing wrong with that arrangement. A bona fide relationshp is a bona fide relationship regardless. The critical thing with what you wrote is that you live together.