Thanks for all your replies everyone. Nice to know it doesn't go on forever. Lachlan has been alot better in the last few days. Not sure why, haven't changed anything but he does go through good patches so hopefully this one will continue and we will be lucky to have solids fix the problem.

Bun I got some karicare thickener for his formula and i agree it is gross. only used it once when dh used it and he chucked as much if not more than usual. Oh well, not long now till solids!