help! 
so i'm on my first grow almost to harvest,
i have been using soil and 1/3 nut solution, molases during flowering, Temperature has been constant between 77-80ish, everything else is exactly the same throughout the whole grow.
i have been tying down the main stem, and also the side branches as they get too tall.
now the bottom say 5 branches (which have some of my best buds) are starting to turn lighter green, and it looks like they are gonna go yellow soon.
what do i do? if they turn yellow, will they be garbage to harvest? like should i harvest the lower branches early? i really wanted to wait full term but the lower 5 branches have such big buds, i'm afraid to ruin them.
on schedule to start flush next week sometime.
i included pictures, i hope the color differences came out, the left side of the plant, green and healthy, right side and back is what i am worried about
thanks!!

so i'm on my first grow almost to harvest,
i have been using soil and 1/3 nut solution, molases during flowering, Temperature has been constant between 77-80ish, everything else is exactly the same throughout the whole grow.
i have been tying down the main stem, and also the side branches as they get too tall.
now the bottom say 5 branches (which have some of my best buds) are starting to turn lighter green, and it looks like they are gonna go yellow soon.
what do i do? if they turn yellow, will they be garbage to harvest? like should i harvest the lower branches early? i really wanted to wait full term but the lower 5 branches have such big buds, i'm afraid to ruin them.
on schedule to start flush next week sometime.
i included pictures, i hope the color differences came out, the left side of the plant, green and healthy, right side and back is what i am worried about
thanks!!