Starting out growing tobacco for cigars and possibly chew: @Bigborebob

[Wombat_smokes]

The yellowing looks normal to me. Old leaves turning yellow is ok. New leaves growing yellow is nutrient problems. As the small, juvenile leaves (that you aren't gonna harvest anyway) often fade before the large, desirable leaves reach maturity.

My condolences for early budding. Those plants won't amount to much, but they are giving you seeds to save for next year. They are also good for practicing the curing process.