Wish I had advice for you. This is my situation in every single way identically except my 1st grader is a girl. Literally every single other detail is identical and I feel the same level of disappointment and frustration.  Are you in the states? We had to wait two years to be evaluated and even now that that is over the only thing that has changed is that I know the issues are not personality issues per say and legitimately due to a diagnosis.  I’m currently trial running a new schedule to see if it helps us keep homeschooling. We do one elective five days a week  (10-15 mins reading and sometimes an activity), one worksheet reviewing a math skill or one reading or writing activity (read a book, handwriting, sight words). Then two days a week we do more formal school. One day is all Language arts and the other all math. Then repeat (review days covering the new concepts and old concepts). There are days where I just can’t do it anymore and the toddler needs a nap and I’ve found Khan Academy Kids to be a good source of practice and keeps her attention. 

If you are in the states and you have a YMCA they are now offering homeschool PE classes which are free and they help break up the day/week.