Dr rang with DS allergy blood test results and he has a grade 4 reaction to house dust and dust mites and a low reaction to timothy grass. During the day he seems ok ish this time of year but at night time he is suffereing and sniffling/sneezing. When I asked the Dr what to do to help him she said clean clean and clean again. His bedroom is a tip tbh but he is a typical 6 year old lego mad lad. Anyone with any advice/tips on wher to start, I have been looking at the bedding and hepa dysons (mine is old) but everything is expensive and he has laminate so not sure I need a new vacuum just yet but tbh any tips would be really welcome as not sure where to start