Hi Kathleen.
I wanted to give a suggestion on your quest to gain weight.
I am a man 5'8", and was fairly overweight for my height, at 195 to 200 pounds.
Well, just a few weeks after my lingual toncillectomy, I lost 19 pounds very quickly. Then I gained some back before my chemo and rads, but I have trouble with food taste, so now I am down to about 165, midway through my treatments.
So definitely a good idea to get some supplemental weight now, and to plan what can help during treatment.
I didn't know better, so I just bought a case of Boost high protein. But in my case, I really needed Boost Plus or Ensure Plus versions, which have high calories, like 360 and 350 if I recall.
And if you need both high protein and calories, Ensure has a version called Enlive. That seems to be the most expensive of all the nutritional drinks. Also, some stores have their own brand labels of the Plus versions, like a supermarket by me, ShopRite. Unless you can find a lot of high value coupons for 6 or 4 packs, the 24 bottle cases at warehouse clubs, will usually provide the best value.
Best of luck with your weight, and your treatment plans and any possible second opinions.