Walking in third trimester

Prat

Advice please!!

Didn’t have a habit of walking before and now diagnosed with gestational diabetes at 27 weeks. Trying to maintain only with stirct diet(reduced portions of eating) without taking insulin.. walking 30min each meal.

Walking helps to maintain sugar levels but Feeling very tired…!! and lost 2-3pounds currently I am 27 weeks

Does walking too much gives any problem in the coming weeks???

Thanks in advance.