I had that swallowing problem ( plus chewing…) for several months.
The advises my nutritionist gave me were as follows:
eat less at each meal but eat more often (5 times a day) and eat more caloric food…
There is also a technique to drink: there should be a distance equivalent to your clenched fist between your chin and your chest, that position opens your throat at the maximum.
I lost up to 8 kg (from 80 kg) during that period.
I bought also a book of recipes written by a professional cook who had developed MG…unfortunately it is in french…but maybe, one could find the equivalent in english?
Maurice.