I would do just as your GP has suggested, you still have time and there is no need to worry. It is a case of ‘lead a horse to water…’, you cant force a bub to take solids. It is common that bubs just decide that solids isn’t their thing for a while, this is fine, keep offering a little each day as you have been (after milk feeds), taking it a way without a fuss if bub says no. You may also like to try some finger foods soon, some bubs skip pureed foods entirely, a good way to do this is with one of those baby feeding meshes or teething rusks (Baby Mum Mum are good ones).
I am pretty sure I wrote a tips sheet for Huggies on babies rejecting food (check under the Feeding Baby section on the site) if no luck flick me a quick email and I can send it to you.
You are likely to find that baby may go to 7ish months and then when she takes to solids she will really get going (bubs who start solids early generally take longer to get going often the opposite applies). If you get to over 7 months and things don’t change pop back to your GP or to the early child health nurse.
Hope that helps
All the best
Author of ‘What do I Feed my Baby?’ and ‘Sneakys Recipes for Fussy Foodies’ books.