Jimmy Carter started his Presidency with high approval 'ratings' but ended with very low 'rating'. He got thumped at the 'polls' on election day in 1980 by Ronald Reagan. I don't put a lot of stock in 'polls'.   People who do are often disappointed. The only 'poll' that matters is on election day. 
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 Trump is more popular today than on the day he was elected. That's my gut feeling and that's been about as accurate, or inaccurate,  as any 'poll'.   Nevertheless, I'd rather be in a position where I have no where to go but up, rather than at the very top with no place to fall.